On April 2nd, Donald Trump announced sweeping new ‘reciprocal’ tariffs. These would be in addition to 25% tariffs on imports of cars, steel and aluminium already announced and any other tariffs in place on individual countries, such as China. The new tariffs would apply to US imports from every country, except for Canada and Mexico where tariffs had already been imposed.
The new tariffs will depend on the size of the country’s trade in goods surplus with the USA (i.e. the USA’s trade in goods deficit with that country). The bigger the percentage surplus, the bigger the tariff. But, no matter how small a country’s surplus or even if it runs a deficit (i.e. imports more goods from the USA than it sells), it will still face a minimum 10% ‘baseline’ tariff.
President Trump states that these tariffs are to counter what he claims as unfair trade practices inflicted on the USA. People had been expecting that these tariffs would reflect the tariffs applied by other countries on US goods and possibly also non-tariff barriers, such as the ban on chlorine-washed chicken or hormone-injected beef in the EU and UK. But, by basing them on the size of a country’s trade surplus, this meant imposing them on many countries with which the USA has a free-trade deal with no tariffs at all.
The table gives some examples of the new tariff rates. The largest rates will apply to China and south-east Asian countries, which supply low-priced products, such as clothing, footwear and electronics to the US market. In China’s case, it now faces a reciprocal tariff rate of 34% plus the previously imposed tariff rate of 20%, giving a massive 54%.
What is more, the ‘de minimis’ exemption will be scrapped for packages sent by private couriers. This had exempted goods of $800 or less sent direct to consumers from China and other countries from companies such as Temu and Alibaba. It is also intended to cut back on packages of synthetic opioids sent from these countries.
The US formula for reciprocal tariffs
As we have seen, reciprocal tariffs do not reflect countries’ tariff rates on the USA. Instead, rates for countries running a trade in goods surplus with the USA (a US trade deficit with these countries) are designed to reflect the size of that surplus as a percentage of their total imports from the USA. The White House has published the following formula.

where:

When the two elasticities are multiplied together this gives 1 and so can be ignored. As there was no previous ‘reciprocal’ tariff, the rise in the reciprocal tariff rate is the actual reciprocal tariff rate. The formula for the reciprocal tariff rate thus becomes the percentage trade surplus of that country with the USA: (exports – imports) / imports, expressed as a percentage. This is then rounded up to the nearest whole number.
President Trump also stated that countries would be given a discount to show US goodwill. This involves halving the rate from the above formula and then rounding up to the nearest whole number.
Take the case of China. China’s exports of goods to the USA in 2024 were $439bn, while its imports of goods from the USA were $144bn, giving China a trade surplus with the USA of $295bn. Expressing this as a percentage of exports gives ($295/$439 × 100)/2 = 33.6%, rounded up to 34%. For the EU, the formula gives ($227bn/$584bn × 100)/2 = 19.4%, rounded up to 20%.
Questioning the value of φ. Even if you accept the formula itself as the basis for imposing tariffs, the value of the second term in the denominator, φ, is likely to be seriously undervalued. The term represents the elasticity of import prices with respect to tariff changes. It shows the proportion of a tariff rise that is passed on to consumers, which is assumed to be just one quarter, with producers bearing the remaining three quarters. In reality, it is highly likely that most of the tariff will get passed on, as it was with the tariffs applied in Donald Trump’s first presidency.
If the value for φ were 1 (i.e. all the tariff passed on to the consumer), the formula would give a ‘reciprocal tariff’ of just one quarter of that with a value of φ of 0.25. The figures in the table above would look very different. If the rates were then still halved, all countries with a tariff below 40% (such as the EU, Japan or India) would instead face just the baseline tariff of 10%. What is more, China’s rate would be reduced from 54% to 30% (the original 20% plus the baseline of 10%). Cambodia’s would be reduced to 13%. Even if the halving discount were no longer applied, the rates would still be only half of those shown in the table (and 37% for China).
Are the tariffs justified?
Even if a correct value of φ were used, a percentage trade surplus is a poor way of measuring the protection used by a country. Many countries running a trade surplus with the USA are low-income countries with low labour costs. They have a comparative advantage in labour-intensive goods. That allows such goods to be purchased at low cost by Americans. Their trade surplus may not be a reflection of protection at all.
Also, if protection is to be used to reflect the trade imbalance with each country, then why impose a 10% baseline on countries, like the UK, with which the USA has a trade surplus? By the Trump administration’s logic, it ought to be subsidising UK imports or accepting of UK tariffs on imports of US goods.
But President Trump also wants to address the USA’s overall trade deficit. The US balance of trade in goods deficit was $1063bn in 2023 (the latest year for a full set of figures). But the overall balance of payments must balance. There were thus surpluses elsewhere on the balance of payments account (and some other deficits). There was a surplus on the services account of $278bn and on the financial account of $924bn. In other words, inward investment to the USA (both direct and portfolio) and the acquisition of dollars by other countries as a reserve asset were very large and helped to drive up the exchange rate. This made US goods less competitive and imports relatively cheaper.
The USA has a large national debt of some $36 trillion of which some $9 trillion is owed to foreign investors (people, institutions or countries). Servicing the debt pushes up US interest rates. This helps to maintain a high exchange rate, thereby making imports cheaper and worsening the trade deficit. The fiscal burden of servicing the debt also crowds out US government expenditure on items such as defence, education, law and order and infrastructure. President Trump hopes that tariffs will bring in additional revenue to help finance the deficit.
Effects on the USA
If the tariffs reduce spending on imports and if other countries do not retaliate, then the US balance of trade should improve. However, a tariff is effectively a tax on imported goods. It is charged to the importing company not to the manufacturer abroad. As we saw in the context of the false value for φ, most of the tariff will be passed on to American consumers. Theoretically the incidence of the tariff is shared between the supplier and the purchaser, but in practice, most of the higher cost to the importer will be passed on to the consumer. As with other taxes, the effect is to transfer money from the consumer to the government, making people poorer but giving the government extra revenue. This revenue will be dollars, not foreign currency.
As some of the biggest price rises will be for cheap manufactured products, such as imports from China, and various staple foodstuffs, the effects could be felt disproportionately by the poor. Higher import prices will allow domestic producers competing with these imports to raise their prices too. The tariffs are thus likely to be inflationary. But because the inflation would be the result of higher costs, not higher demand, this could lead to recession as real incomes fell.
American resources will be diverted by the tariffs from sectors in which the USA has a comparative advantage, such as advanced manufactured goods and services, to more basic products. Tariffs on cheap imports will make domestic versions of these products more profitable: even though they are more costly to produce, they will be sold at a higher price.
The tariffs will also directly affect goods produced by US companies. The reason is that many use complex supply chains involving parts produced abroad. Take the case of Apple. Even though it is an American company which designs its products in California, the company sources parts from several Asian countries and has factories in Vietnam, China, India, and Thailand. These components will face tariffs and thus directly affect the price of iPhones, iPads, MacBooks, etc. Similarly affected are other US tech hardware manufacturers, US car manufactures, clothing and footwear producers, such as The Gap and Nike, and home goods producers.
Monetary policy response. How the Fed would respond is not clear. Higher inflation and lower growth, or even a recession, produces what is known as ‘stagflation’: inflation combined with stagnation. Many countries experienced stagflation following the Russian invasion of Ukraine, when higher commodity prices led to soaring inflation and economic slowdown. There was a cost-of-living crisis.
If a central bank has a simple mandate of keeping inflation to a target, higher inflation would be likely to lead to higher interest rates, making recession even more likely. It is the inflation of the two elements of stagflation (inflation and stagnation) that is addressed. The recession is thus likely to be deepened by monetary policy. But as the Fed has a dual mandate of controlling inflation but also of maximising employment, it may choose not to raise interest rates, or even to lower them, to get the optimum balance between these two targets.
If other countries retaliate by themselves raising tariffs on US exports and/or if consumers boycott American goods and services, this will further reduce incomes in the USA. Just two days after ‘liberation day’, China retaliated against America’s 34% additional tariff on Chinese imports by imposing its own 34% tariff on US imports to China.
A trade war will make the world poorer, especially the USA. Investors know this. In the two days following ‘liberation day’, stock markets around the world fell sharply and especially in the USA. The Dow Jones was down 9.3% and the tech-heavy Nasdaq Composite was down 11.4%.
Effects on the rest of the world
The effects of the tariffs on other countries will obviously depend on the tariff rate. The countries facing the largest tariffs are some of the poorest countries which supply the USA with simple labour-intensive products, such as garments, footwear, food and minerals. This could have a severe effect on their economies and cause rapidly increasing poverty and hardship.
If countries retaliate, then this will raise prices of their imports from the USA and hurt their own domestic consumers. This will fuel inflation and push the more seriously affected countries into recession.
If the USA retaliates to this retaliation, thereby further escalating the trade war, the effects could be very serious. The world could be pushed into a deep recession. The benefits of trade, where all countries can gain by specialising in producing goods with low opportunity costs and importing those with high domestic opportunity costs, would be seriously eroded.
What President Trump hopes is that the tariffs will put him in a strong negotiating position. He could offer to reduce or scrap the tariffs on a particular country in exchange for something he wants. An example would be the offer to scrap or reduce the baseline 10% tariff on UK exports and/or the 25% tariff on UK exports of cars, steel and aluminium. This could be in exchange for the UK allowing the importation of US chlorinated chicken or abolishing the digital services tax. This was introduced in 2020 and is a 2% levy on tech firms, including big US firms such as Amazon, Alphabet (Google), Meta and X.
It will be fascinating but worrying to see how the politics of the trade war play out.
Videos
Trump’s tariffs on China, EU and more, at a glance
BBC News, Michelle Fleury and Kayla Epstein (2/4/25)
Why Trump’s tariffs aren’t really reciprocal
BBC News, Ben Chu (3/4/25)
Trump Tariff calculations are “unreliable”
New Statesman on YouTube, Andrew Marr & Duncan Weldon (3/4/25)
Here’s a look at Trump’s math for ‘reciprocal’ tariffs
Reuters on YouTube, Daniel Burns (3/4/25)
The U.S. is the loser in Trump’s tariff war
MSNBC on YouTube, Steve Rattner (4/4/25)
“American Empire Is in Decline”: Trump’s Trade War & Tariffs
Democracy Now on YouTube, Richard Wolff (3/4/25)
‘Our unity is our strength’ – EU responds to Trump’s tariffs
BBC News, Ursula von der Leyen, President of the European Commission (3/4/25)
Articles
- How were Donald Trump’s tariffs calculated?
BBC News, Ben Chu and Tom Edgington (3/4/25)
- How to read the White House’s tariff formula
Axios, Felix Salmon and Neil Irwin (3/4/25)
- Trump’s ‘idiotic’ and flawed tariff calculations stun economists
The Guardian, Richard Partington (3/4/25)
- Perilous and chaotic, Trump’s ‘liberation day’ endangers the world’s broken economy – and him
The Guardian, Martin Kettle (2/4/25)
- ‘In economic terms, Trump’s tariffs make no sense at all’
The Guardian, Heather Stewart and Richard Partington (4/3/25)
- Trump’s chaos-inducing global tariffs, explained in charts
The Guardian, Lauren Aratani, Lucy Swan, Ana Lucía González Paz and Aliya Uteuova (3/4/25)
- Trump’s trade war will hurt everyone – from Cambodian factories to US online shoppers
The Conversation, Lisa Toohey (3/4/25)
- Consumers are boycotting US goods around the world. Should Trump be worried?
The Conversation, Alan Bradshaw and Dannie Kjeldgaard (4/4/25)
- How the UK and Europe could respond to Trump’s ‘liberation day’ tariffs
The Conversation, Renaud Foucart (3/4/25)
- Trump just massively escalated his trade war. Here’s what he announced
CNN, Elisabeth Buchwald (2/4/25)
- EU plans countermeasures to new US tariffs, says EU chief
Reuters, Philip Blenkinsop and Benoit Van Overstraeten (3/4/25)
- Wall Street analysts anguish over ‘Liberation Day’
FT Alphaville, Robin Wigglesworth (3/4/25)
- Reciprocal tariffs: you won’t believe how they came up with the numbers
Financial Times, Alexandra Scaggs (3/4/25)
- Donald Trump baffles economists with tariff formula
Financial Times, Peter Foster and Sam Fleming (3/4/25)
Five key takeaways from Trump’s ‘Liberation Day’ reciprocal tariffs
Aljazeera (3/4/25)
- These American companies are in big trouble from Trump tariffs
Axios, Nathan Bomey (3/4/25)
White House publications
Questions
- What is the law of comparative advantage? Does this imply that free trade is always the best alternative for countries?
- From a US perspective, what are the arguments for and against the tariffs announced by President Trump on 2 April 2025?
- What response to the tariffs is in the UK’s best interests and why?
- Should the UK align with the EU in responding to the tariffs?
- What is meant by a negative sum game? Explain whether a trade war is a negative sum game. Can a specific ‘player’ gain in a negative sum game?
- What happened to stock markets directly following President Trump’s announcement and what has happened since? Explain you findings.
Economic growth is closely linked to investment. In the short term, there is a demand-side effect: higher investment, by increasing aggregate demand, creates a multiplier effect. GDP rises and unemployment falls. Over the longer term, higher net investment causes a supply-side effect: industrial capacity and potential output rise. This will be from both the greater quantity of capital and, if new investment incorporates superior technology, from a greater productivity of capital.
One of the biggest determinants of investment is certainty about the future: certainty allows businesses to plan investment. Uncertainty, by contrast, is likely to dampen investment. Investment is for future output and if the future is unknown, why undertake costly investment? After all, the cost of investment is generally recouped over several months or year, not immediately. Uncertainty thus increases the risks of investment.
There is currently great uncertainty in the USA and its trading partners. The frequent changes in policy by President Trump are causing a fall in confidence and consequently a fall in investment. The past few weeks have seen large cuts in US government expenditure as his administration seeks to dismantle the current structure of government. The businesses supplying federal agencies thus face great uncertainty about future contracts. Laid-off workers will be forced to cut their spending, which will have knock-on effect on business, who will cut employment and investment as the multiplier and accelerator work through.
There are also worries that the economic chaos caused by President Trump’s frequent policy changes will cause inflation to rise. Higher inflation will prompt the Federal Reserve to raise interest rates. This, in turn, will increase the cost of borrowing for investment.
Tariff uncertainty
Perhaps the biggest uncertainty for business concerns the imposition of tariffs. Many US businesses rely on imports of raw materials, components, equipment, etc. Imposing tariffs on imports raises business costs. But this will vary from firm to firm, depending on the proportion of their inputs that are imported. And even when the inputs are from other US companies, those companies may rely on imports and thus be forced to raise prices to their customers. And if, in retaliation, other countries impose tariffs on US goods, this will affect US exporters and discourage them from investing.
For many multinational companies, whether based in the USA or elsewhere, supply chains involve many countries. New tariffs will force them to rethink which suppliers to use and where to locate production. The resulting uncertainty can cause them to delay or cancel investments.
Uncertainty has also been caused by the frequent changes in the planned level of tariffs. With the Trump administration using tariffs as a threat to get trading partners to change policy, the threatened tariff rates have varied depending on how trading partners have responded. There has also been uncertainty on just how the tariff policy will be implemented, making it more difficult for businesses to estimate the effect on them.
Then there are serious issues for the longer term. Other countries will be less willing to sign trade deals with the USA if they will not be honoured. Countries may increasingly look to diverting trade from the USA to other countries.
Video
Articles
- Trump’s erratic trade policies are baffling businesses, threatening investment and economic growth
Associated Press, Paul Wiseman, Anne D’innocenzio and Mae Anderson (6/3/25)
- The world is beginning to tire of Trump’s whiplash leadership
CNN, Stephen Collinson (6/3/25)
- US stocks slide and Nasdaq enters correction as chaos over Trump’s tariffs intensifies
CNN, John Towfighi (6/3/25)
- Trump’s Tariffs And Trade: Uncertainty, Chaos Or Brilliance?
Forbes, Mike Patton (6/3/25)
- How Trump’s second term might affect the market and your finances
The Conversation, Art Durnev (4/3/25)
- US corporate bond investors cautiously navigate trade war uncertainty
Reuters, Matt Tracy (6/3/25)
This week in Trumponomics: Playing chicken with markets
Yahoo Finance, Rick Newman (8/3/25)
- Measuring fear: What the VIX reveals about market uncertainty
The FRED Blog, Aakash Kalyani (13/2/25)
- Trump shrugs off stock market slump, but economic warning signs loom
The Conversation, Conor O’Kane (17/3/25)
Data
Questions
- Find out what tariffs have been proposed, imposed and changed since Donald Trump came to office on 20 January 2025.
- In what scenario might US investment be stimulated by Donald Trump’s policies?
- What countries’ economies have gained or are set to gain from Donald Trump’s policies?
- What is the USMCA agreement? Do Donald Trump’s policies break this agreement?
- Find out and explain what has happened to the US stock market since January 2025. How do share prices affect business investment?
- Which sector’s shares have risen and which have fallen?
- Using the Data link above, find out what has been happening to the US Policy Uncertainty Index since Donald Trump was elected and explain particular spikes in the index. Is this mirrored in the global Policy Uncertainty Index?
- Are changes in the Policy Uncertainty Index mirrored in the World Uncertainty Index (WUI) and the CBOE Volatility Index: VIX?
Tesla sales have fallen dramatically recently. In Europe they were down 47.7% in January 2025 compared with January 2024. In Spain the figure was 75.4%, in France 63.4%, in Germany 59.5%, in Sweden 44.3%, in Norway 37.9%, in the UK 18.2% and in Italy 13.4%. And it was not just Europe. In Australia the figure was 33.2%, in China 15.5% and in California 11.6%. Meanwhile, Tesla’s share price has fallen from a peak of $480 on 17 December 2024 to $338 on 21 February 2025, although that compares with $192 in February 2024.
So why have Tesla sales fallen? It’s not because of a rise in price (a movement up the demand curve); indeed, Tesla cut its prices in 2024. Part of the reason is on the supply side. In several countries, stocks of Teslas are low. Some consumers who would have bought have had to wait. However, the main reason is that the demand curve has shifted to the left. So why has this happened?
A reaction to Elon Musk?
One explanation is a growing unpopularity of Elon Musk among many potential purchasers of electric vehicles (EVs). People are more likely to buy an EV if they are environmentally concerned and thus more likely to be Green voters or on the political left and centre. Elon Musk, by supporting Donald Trump and now a major player in the Trump administration, is seen as having a very different perspective. Trump’s mantra of ‘drill, baby drill’ and his announced withdrawal from the Paris agreement and the interventions of Trump, Vance and Musk in European politics have alienated many potential purchasers of new Teslas. Elon Musk has been a vocal supporter of the right-wing Alternative for Germany (AfD) party, describing the party as the ‘last spark of hope for this country’ (see BBC article linked below).
There has been outspoken criticism of Musk in the media and the Financial Times reports existing owners of Teslas, who are keen to distance themselves from Musk, ordering stickers for their cars which read ‘I bought this before Elon went crazy’. In a survey by Electrifying.com, 59% of UK potential EV buyers stated that Musk’s reputation put them off buying a Tesla.
Other reasons for a leftward shift in the demand for Teslas
But is it just the ‘Musk factor’ that has caused a fall in demand? It is useful to look at the general determinants of demand and see how each might have affected the demand for Teslas.
The price, number, quality and availability of substitutes Tesla faces competition, not only from long-established car companies, such as Ford, VW, Volvo/Polestar, Seat/Cupra and Toyota, moving into the EV market, but also from Chinese companies, such as BYD and NIO. These are competing in all segments of the EV market and competition is constantly increasing. Some of these companies are competing strongly with Tesla in terms of price; others in terms of quality, style and imaginative features. The sheer number of competitor models has grown rapidly. For some consumers, Teslas now seem dated compared with competitors.
The price and availability of complements. The most relevant complement here is electrical charging points. As Teslas can be charged using both Tesla and non-Tesla charging points, there is no problem of compatibility. The main issue is the general one for all EVs and that is how to achieve range conveniently. The fewer the charging points and more widely disbursed they are, the more people will be put off buying an EV, especially if they are not able to have a charging point at home. Clearly, the greater the range of a model (i.e. the distance that can be travelled on a full battery), the less the problem. Teslas have a relatively high range compared with most (but not all) other makes and so this is unlikely to account for the recent fall in demand, especially relative to other makes.
Expectations. The current best-selling Tesla EV is the Model Y. This model is being relaunched in a very different version, as are other Tesla models. Consumers may prefer to wait until the new models become available. In the meantime, demand would be expected to fall.
Conclusions
As we have seen, there have been a number of factors adversely affecting Tesla sales. Growing competition is a major factor. Nevertheless, the increasing gap politically between Elon Musk and many EV consumers is a major factor – a factor that is likely to grow in significance if Musk’s role in the Trump administration continues to be one of hostility towards the liberal establishment and in favour of the hard right.
Articles
- Tesla’s sales plummet across Europe
Financial Times, Patricia Nilsson, Laura Pitel and Kana Inagaki (6/2/25)
- Tesla sales plummet nearly 50% in Europe – what’s behind the drop?
motor1.com, Brian Potter (5/2/25)
- Elon Musk is putting buyers off Tesla, survey reveals
Electrifying.com, Tom Barnard (27/1/25)
- ‘I felt nothing but disgust’: Tesla owners vent their anger at Elon Musk
The Guardian, Ashifa Kassam (25/2/25)
- Elon Musk is putting consumers off buying Tesla cars with his behaviour, research suggests
indy100, Ellie Abraham (27/1/25)
- Are Elon Musk’s politics costing Tesla sales?
CNN, Chris Isidore (18/2/25)
- Is Tesla’s sales slump down to Elon Musk?
The Conversation, James Obiegbu and Gretchen Larsen (11/2/25)
- Tesla Sales Are Tanking Across The World
InsideEVs, Patrick George (8/2/25)
- Is Elon Musk steering Tesla into a brand crisis?
The Drum, Audrey Kemp (29/1/25)
- Why are Tesla sales down? Elon Musk’s politics may be to blame
The Standard, Saqib Shah (18/2/25)
- Tesla sales slump on ageing line up, competition
Argus, Chris Welch (12/2/25)
- Trends in electric vehicle charging, Global EV Outlook 2024
International Energy Agency (23/4/24)
- What Are Tesla’s (TSLA) Main Competitors?
Investopedia, Peter Gratton (1/2/25)
- Europe leaders criticise Musk attacks
BBC News, Paul Kirby & Laura Gozzi (7/1/25)
- German far-right leader Weidel woke up to missed call from Elon Musk
Yahoo News, dpa international (24/2/25)
- ‘Major brand worries’: Just how toxic is Elon Musk for Tesla?
The Guardian, Dan Milmo and Jasper Jolly (8/3/25)
Questions
- Why have BYD EV sales risen so rapidly?
- If people feel strongly about a product on political or ethical grounds, how is that likely to affect their price elasticity of demand for the product?
- Find out how Tesla shareholders are reacting to Elon Musk’s behaviour.
- Find out how Tesla sales have changed among (a) Democratic voters and (b) Republican voters in the USA. How would you explain these trends?
- Identify some products that you would or would not buy on ethical grounds. How carefully have you researched these products?
In a blog from March 2023 (reproduced below), we saw how there has been growing pressure around the world for employers to move to a four-day week. Increasing numbers of companies have adopted the model of 80% of the hours for 100% of the pay.
As we see below, the model adopted has varied across companies, depending on what was seen as most suitable for them. Some give everyone Friday off; others let staff choose which day to have off; others let staff work 80% of the hours on a flexible basis. Firms adopting the model have generally found that productivity and revenue have increased, as has employee well-being. To date, over 200 employers in the UK, employing more than 5000 people, have adopted a permanent four-day week.
This concept of 100-80-100, namely 100% of pay for 80% of hours, but 100% of output, has been trialled in several countries. In Germany, after trials over 2024, 73% of the companies involved plan to continue with the new model, with the remaining 27% either making minor tweaks or yet to decide. Generally hourly productivity rose, and in many cases total output also rose. As the fourth article below states:
The primary causal factor for this intriguing revelation was simple – efficiency became the priority. Reports from the trial showed that the frequency and duration of meetings was reduced by 60%, which makes sense to anyone who works in an office – many meetings could have been a simple email. 25% of companies tested introduced new digitised ways of managing their workflow to optimise efficiency.
Original post
In two previous posts, one at the end of 2019 and one in July 2021, we looked at moves around the world to introduce a four-day working week, with no increase in hours on the days worked and no reduction in weekly pay. Firms would gain if increased worker energy and motivation resulted in a gain in output. They would also gain if fewer hours resulted in lower costs.
Workers would be likely to gain from less stress and burnout and a better work–life balance. What is more, firms’ and workers’ carbon footprint could be reduced as less time was spent at work and in commuting.
If the same output could be produced with fewer hours worked, this would represent an increase in labour productivity measured in output per hour.
The UK’s poor productivity record since 2008
Since the financial crisis of 2007–8, the growth in UK productivity has been sluggish. This is illustrated in the chart, which looks at the production industries: i.e. it excludes services, where average productivity growth tends to be slower. The chart has been updated to 2024 Q2 – the latest data available. (Click here for a PowerPoint of the chart.)
Prior to the crisis, from 1998 to 2006, UK productivity in the production industries grew at an annual rate of 6.9%. From 2007 to the start of the pandemic in 2020, the average annual productivity growth rate in these industries was a mere 0.2%.
It grew rapidly for a short time at the start of the pandemic, but this was because many businesses temporarily shut down or went to part-time working, and many of these temporary job cuts were low-wage/low productivity jobs. If you take services, the effect was even stronger as sectors such as hospitality, leisure and retail were particularly affected and labour productivity in these sectors tends to be low. As industries opened up and took on more workers, so average productivity rapidly fell back. Since then productivity has flatlined.
If you project the average productivity growth rate from 1998 to 2007 of 6.9% forwards (see grey dashed line), then by 2024 Q3, output per hour in the production industries would have been 3.26 times higher than it actually was: a gap of 226%. This is a huge productivity gap.
Productivity in the UK is lower than in many other competitor countries. According to the ONS, output per hour in the UK in 2021 was $59.14 in the UK. This compares with an average of $64.93 for the G7 countries, $66.75 in France, £68.30 in Germany, $74.84 in the USA, $84.46 in Norway and $128.21 in Ireland. It is lower, however, in Italy ($54.59), Canada ($53.97) and Japan ($47.28).
As we saw in the blog, The UK’s poor productivity record, low UK productivity is caused by a number of factors, not least the lack of investment in physical capital, both by private companies and in public infrastructure, and the lack of investment in training. Other factors include short-termist attitudes of both politicians and management and generally poor management practices. But one cause is the poor motivation of many workers and the feeling of being overworked. One solution to this is the four-day week.
Latest evidence on the four-day week
Results have just been released of a pilot programme involving 61 companies and non-profit organisations in the UK and nearly 3000 workers. They took part in a six-month trial of a four-day week, with no increase in hours on the days worked and no loss in pay for employees – in other words, 100% of the pay for 80% of the time. The trial was a success, with 91% of organisations planning to continue with the four-day week and a further 4% leaning towards doing so.
The model adopted varied across companies, depending on what was seen as most suitable for them. Some gave everyone Friday off; others let staff choose which day to have off; others let staff work 80% of the hours on a flexible basis.
There was little difference in outcomes across different types of businesses. Compared with the same period last year, revenues rose by an average of 35%; sick days fell by two-thirds and 57% fewer staff left the firms. There were significant increases in well-being, with 39% saying they were less stressed, 40% that they were sleeping better; 75% that they had reduced levels of burnout and 54% that it was easier to achieve a good work–life balance. There were also positive environmental outcomes, with average commuting time falling by half an hour per week.
There is growing pressure around the world for employers to move to a four-day week and this pilot provides evidence that it significantly increases productivity and well-being.
Additional articles
Original set of articles
- Results from world’s largest 4 day week trial bring good news for the future of work
4 Day Week Global, Charlotte Lockhart (21/2/23)
- Four-day week: ‘major breakthrough’ as most UK firms in trial extend changes
The Guardian, Heather Stewart (21/2/23)
- Senedd committee backs four-day working week trial in Wales
The Guardian, Steven Morris (24/1/23)
- ‘Major breakthrough’: Most firms say they’ll stick with a four-day working week after successful trial
Sky News, Alice Porter (21/2/23)
- Major four-day week trial shows most companies see massive staff mental health benefits and profit increase
Independent, Anna Wise (21/2/23)
- Four-day week: Which countries have embraced it and how’s it going so far?
euronews, Josephine Joly and Luke Hurst (23/2/23)
- Firms stick to four-day week after trial ends
BBC News, Simon Read, Lucy Hooker & Emma Simpson (21/2/23)
- The climate benefits of a four-day workweek
BBC Future Planet, Giada Ferraglioni and Sergio Colombo (21/2/23)
- Four-day working week: why UK businesses and workers will continue with new work pattern, plus pros and cons
National World, Rochelle Barrand (22/2/23)
- Most companies in UK four-day week trial to continue with flexible working
Financial Times, Daniel Thomas and Emma Jacobs (21/2/23)
- The pros and cons of a four-day working week
Financial Times, Editorial (13/2/23)
- Explaining the UK’s productivity slowdown: Views of leading economists
VoxEU, Ethan Ilzetzki (11/3/20)
- Why the promised fourth industrial revolution hasn’t happened yet
The Conversation, Richard Markoff and Ralf Seifert (27/2/23)
Questions
- What are the possible advantages of moving to a four-day week?
- What are the possible disadvantages of moving to a four-day week?
- What types of companies or organisations are (a) most likely, (b) least likely to gain from a four-day week?
- Why has the UK’s productivity growth been lower than that of many of its major competitors?
- Why, if you use a log scale on the vertical axis, is a constant rate of growth shown as a straight line? What would a constant rate of growth line look like if you used a normal arithmetical scale for the vertical axis?
- Find out what is meant by the ‘fourth industrial revolution’. Does this hold out the hope of significant productivity improvements in the near future? (See, for example, last link above.)
On the day he came to office, President Trump signed a series of executive orders. One of these was to set in motion the process of withdrawing from the UN Paris climate agreement. Section 3(a) of the order reads:
The United States Ambassador to the United Nations shall immediately submit formal written notification of the United States’ withdrawal from the Paris Agreement under the United Nations Framework Convention on Climate Change.
The Paris Agreement is an international treaty on climate change. It was adopted on 12 December 2015 and came into force on 4 November 2016, 30 days after the point was reached when at least 55 countries accounting for at least 55% of global emissions had ratified the treaty.
Currently, all UN countries are signatories to the agreement and only Iran, Libya and Yemen are yet to ratify it. The agreement commits countries to limiting global warming to well under 2°C above pre-industrial levels and preferably to no more than 1.5°C. This would involve reducing greenhouse gas emissions and/or taking carbon absorbing measures.
Since 2020, each country has been required to submit its own emission-reduction targets, known as ‘nationally determined contributions’ (NDCs), and the actions it will take to meet them. Every five years each country must submit a new NDC more ambitious than the last.
Rich countries are expected to provide finance to low-income countries. This is required to help poor countries adopt green technologies and to adapt to the harmful effects of climate change (e.g. through irrigation schemes and flood defences).
Countries set target dates by which emissions would be fully offset by carbon absorption measures (‘net zero’). The UN’s goal is to reach global net zero by 2050. According to the UN Climate Action site:
As of June 2024, 107 countries, responsible for approximately 82 per cent of global greenhouse gas emissions, had adopted net-zero pledges either in law, in a policy document such as an national climate action plan or a long-term strategy, or in an announcement by a high-level government official. More than 9000 companies, over 1000 cities, more than 1000 educational institutions, and over 600 financial institutions have joined the Race to Zero, pledging to take rigorous, immediate action to halve global emissions by 2030.
The Paris Agreement has helped to cut emissions or slow their rate of growth in most countries. Although net zero by 2050 may be unlikely, warming will be less than without the agreement.
The USA and the Paris Agreement
In April 2016 the USA signed the Paris Agreement. As stated above, the Paris Agreement came into effect on 4 November 2016.
President Trump came to office for the first time in January 2017. In June 2017, he signed an executive order in which he announced that the USA would withdraw from the agreement, arguing that it undermined the US economy and put it at a competitive disadvantage. He claimed that global warming is a hoax concocted by China designed to undermine the competitive power of the USA.
However, despite Trump’s intention to withdraw from the agreement, its terms did not allow a country to begin a withdrawal procedure for at least three years after the agreement was ratified (i.e. not before 4 November 2019) and then a year’s notice has to be given. This notice was given on 4 November 2019. In the meantime, the USA had to abide by the terms of the treaty. During this period, US representatives at COP meetings used the opportunity to promote fossil fuels. Withdrawal took place on 1 November 2020, just one day after the presidential election and just over two months before the end of Trump’s first term of office.
On 20 January 2021, his first day in office, President Biden signed an executive order to rejoin the agreement, which took place on 19 February 2021. He committed to cutting total greenhouse gas emissions by at least 50% by 2030. To achieve this, his administration adopted a number of emissions-reducing measures, for example requiring all new passenger vehicles sold after 2035 to be emissions free, giving tax credits for clean electricity generation, providing federal funds for smart agriculture and setting greener appliance and equipment standards.
But, as we have seen, newly elected President Trump for the second time announced that the USA would withdraw from the Paris agreement and would prioritise fossil fuel production, under the mantra, ‘drill, baby, drill’.
The economics of climate change
Climate change is directly caused by market failures. One of the most important of these is that the atmosphere is a common resource: it is not privately owned; it is a global ‘commons’. Individuals and firms use it at a zero price. If the price of any good or service to the user is zero, there is no incentive to economise on its use. Thus for the emitter there are no private costs of using the atmosphere in this way as a ‘dump’ for their emissions and, in a free market, no incentive to reduce the climate costs.
And yet when firms emit greenhouse gases into the atmosphere there are costs to other people. To the extent that they contribute to global warming, part of these costs will be borne by the residents of that country; but a large part will be borne by inhabitants of other countries.
These climate costs are external costs to the firm and are illustrated in the figure. It shows an industry that emits CO2. To keep the analysis simple, assume that it is a perfectly competitive industry with demand and supply given by curves D and S, which are equal to the marginal private benefits (MPB) and marginal private costs (MPC), respectively. There are no externalities on the demand side and hence MPB equals the marginal social cost (MSB). Market equilibrium is at point a, with output at Qpc and price at Ppc. (Click here for a PowerPoint.)
Assume that the emissions create a marginal cost to society equal to MECc. Assume that the MEC increases as output and total emissions increase. The MECc line is thus upward sloping. At the market price of Qpc, these external climate costs are equal to the purple vertical line. When these external climate costs are added to private costs, this gives a marginal social cost given by MSC = MPC + MECc. The gives a socially optimal level of output of the product of Q* at a price of P*, with the optimum point of c.
In other words, other things being equal, the free market overproduces products with climate externalities. If the output is to be reduced to the social optimum of Q*, then the government will need to take measures such as those advocated in the Paris Agreement. These could include imposing taxes on products, such as electricity generated by fossil fuels, or on the emissions themselves. Or green alternatives, such as wind power, could be subsidised.
Alternatively, regulations could be used to cap the production of products creating emissions, or caps on the emissions themselves could be imposed. Emissions permits could be issued or auctioned. Only firms in possession of the permits would be allowed to emit and the permits would cap emissions below free-market levels. These permits could be traded under a cap-and-trade scheme, such as the EU’s Emissions Trading Scheme. Again, such schemes are advocated under the Paris Agreement.
Effect of the USA’s withdrawal from the Paris Agreement
Withdrawal from the Paris Agreement and promoting fossil fuels will increase US emissions. Scientific consensus is that this will have a negative effect on climate change. Only part of these climate costs will be borne by the USA, although the severity of recent fires in California, fanned by strong Santa Ana winds, and more violent hurricanes are two examples of costs of climate change to the USA itself.
A bigger worry is whether the USA’s withdrawal will encourage other countries, such as Argentina, to do likewise. Then the climate costs of US withdrawal will be greater.
But all is not bad news. The transition to green energy is well advanced and the costs of solar and wind power are decreasing. Global investment in clean energy has increased by 60% since 2015. China is investing heavily in renewable energy technology, which is giving it a significant trade advantage. The EU has taken significant actions to promote green energy and technology. Similarly, industrial processes that economise on emissions are developing apace and it is becoming increasingly profitable for private companies to make climate-friendly investments without subsidies. In the USA itself, many Democratic states and local governments, and even some Republican ones, will continue to adopt climate-friendly policies.
In this environment, the Trump administration does not want to fall behind in the development of new technologies and markets. And with Elon Musk having a significant influence on Donald Trump, the USA’s investment in EVs and battery technology is likely to continue. This will help to reduce the price of green energy and transport.
Videos
Articles
- Trump vows to leave Paris climate agreement and ‘drill, baby, drill’
BBC News, Matt McGrath (20/1/25)
- What is the Paris climate agreement and why has Trump withdrawn?
BBC News, Esme Stallard and Mark Poynting (21/1/25)
- Six Trump executive orders to watch
BBC News (21/1/25)
- The real message behind Trump’s withdrawal of US from the Paris climate agreement
Sky News, Tom Clarke (21/1/25)
- Trump signs order to withdraw US from Paris climate agreement for second time
The Guardian, Dharna Noor (20/1/25)
- Explained: how Trump’s day one orders reveal a White House for big oi
The Guardian, Oliver Milman and Dharna Noor (22/1/25)
- Donald Trump can’t stop global climate action. If we stick together, it’s the US that will lose out
The Guardian, Bill Hare (6/11/24)
Trump to pull US from Paris climate agreement: What could this mean for the environment?
ITV News, Martin Stew (21/1/25)
- 10 reasons why US president-elect Donald Trump can’t derail global climate action
The Conversation, Wesley Morgan and Ben Newell (8/11/24)
- Trump has rejected the Paris agreement again, but game theory shows how other countries can still lead by example
The Conversation, Renaud Foucart (27/1/25)
Information
Questions
- Summarise the Paris Agreement.
- Using a diagram similar to that above, illustrate how the free market will produce a sub-optimal amount of solar power because the marginal social benefit exceeds the marginal private benefit.
- How might game theory be used to analyse possible international decision making in the context of US climate policy?
- Is it in America’s interests to cease investing in green energy and green production methods?
- Go through each of the reasons (not specific to Australia) given in The Conversation article linked above why ‘Donald Trump can’t derail global climate action’. To what extent do you agree with each one?