Measures of competitiveness: relative unit labour costs, export prices and the real exchange rate; price and non-price factors; the wage–productivity diagram with constant-ULC rays; why depreciation is the short cut and productivity the road. Through the UK productivity puzzle.
Between 1998 and 2008 UK output per hour grew about 1.8% a year, faster than the EU average of 1.6%. Between 2008 and 2024 it grew about 0.4% a year, half the EU’s 0.8% and the weakest in the G7. In September 2026 the ONS adopted a new method that revised the decade after the crisis up to about 1.3% a year, making Britain less of an outlier; but the pre-crisis rate was 2%, and output per hour remained roughly 5% below its pre-pandemic path, about £150bn of lost annual output on the Resolution Foundation’s estimate. Growth has picked up to about 1.1% a year over the two years to mid-2026.
The consequence for competitiveness is arithmetic. Wages that rise faster than output per hour raise the cost of each unit produced; unless the pound falls to compensate, exporters lose market share. Since 2008 the UK has relied on the second: sterling is far below its 2007 level against the dollar and the euro, and real wages barely rose for fifteen years.
What makes a country competitive, how is it measured, and which route to it lasts?
Source: ONS, labour productivity statistics and the September 2026 methods review; ONS-based growth comparison 1998–2008 and 2008–2024; Resolution Foundation, August 2026.
International competitiveness is the ability of a country’s firms to sell in world markets against foreign rivals, on price and on everything that is not price. Measures: relative unit labour costs, the labour cost of producing one unit of output compared with competitors, in a common currency; relative export prices; the real exchange rate, the nominal rate adjusted for relative price levels; shares of world exports; and composite indices such as the World Economic Forum’s Global Competitiveness Index, which add infrastructure, institutions, skills and innovation.
Unit labour cost = labour cost per hour ÷ output per hour. It rises when wages grow faster than productivity and falls when productivity outpaces wages. On the diagram, rays from the origin are lines of constant unit labour cost: a country becomes more competitive by moving to a lower ray, either rightward (more output per hour) or downward (lower pay).
Factors. Price factors: productivity, wage growth, the exchange rate, inflation relative to competitors, taxes and regulation that raise costs. Non-price factors: quality, design, reliability, delivery, after-sales service, branding, research and development; Germany’s machinery and Switzerland’s watches sell at high prices because of them. Underneath both sit skills, infrastructure, investment, competition and stable institutions. Why it matters: competitive economies export more, run smaller current account deficits, attract investment and can raise wages without losing markets; uncompetitive ones face deficits, depreciation, and pressure on wages and jobs.
In September 2026 the ONS announced that British productivity since 2008 had grown nearly twice as fast as it had previously thought.
Output per hour had risen about 1.3% a year in the decade after the financial crisis, not 0.7%. Good news, except that the pre-crisis rate was 2%, and the ONS’s deputy chief economist still called it the slowest growth since the Napoleonic wars.
Why does a statistic about output per hour matter for whether British goods sell abroad?
Unit labour cost is wages divided by productivity. If pay rises 3% and output per hour rises 3%, unit costs are unchanged and exporters hold their prices; if productivity stalls, the same pay rise prices them out of markets, or wages must stagnate instead. The UK has lived the second case since 2008.
The diagram. Each ray from the origin is a constant unit labour cost: everywhere on the 0.60 ray, 60p of wages goes into each £1 of output. Home pays £24 an hour for £40 of output: ULC 0.60. The rival pays more, £27.50, but gets £50 of output: ULC 0.55, a lower ray, more competitive. High wages and competitiveness are compatible; low productivity and competitiveness are not.
Check: A worker costs £24 an hour and produces £40 of output an hour. Unit labour cost is:
24 ÷ 40 = 0.60. The rival at £27.50 and £50 has a ULC of 0.55: dearer workers, cheaper output.
The durable route. Productivity rises from £40 to £48 an hour and Home moves right to the 0.50 ray: more competitive than the rival without a penny off pay. Everything that raises output per hour does this: investment, skills, infrastructure, innovation, competition. It is also the only route that lets real wages rise over time, which is why the UK’s productivity puzzle is a competitiveness problem and a living-standards problem at once.
Check: Home invests in machinery and training; output per hour rises from £40 to £48 with wages unchanged at £24. Unit labour cost:
24 ÷ 48 = 0.50. Productivity is the route to competitiveness that also allows wages to rise later.
The short cut. Pay outruns productivity and Home climbs to the 0.70 ray: uncompetitive. A depreciation cuts the foreign-currency price back down, restoring competitiveness overnight, which is why uncompetitive economies see their currencies fall. But it works by making the country poorer, through dearer imports, and the inflation that follows eats the gain unless productivity catches up. Sterling has fallen in every UK crisis since 1967.
Teacher tip: Ask students to compare Germany and Italy inside the euro: with no currency to devalue, Italy’s unit labour costs rose 20–30% relative to Germany’s in the 2000s and its exports stagnated. The euro removed the short cut and exposed the productivity gap underneath.
Check: Pay rises from £24 to £28 an hour with output per hour stuck at £40. To stay as price-competitive as before, the country needs:
ULC rises to 0.70; in foreign currency terms a 14% fall in the pound offsets it. That is what has happened to Britain repeatedly: 1992, 2008, 2016.
Non-price competitiveness. Germany, Switzerland and Japan sell at high prices because of quality, reliability, design, branding and service; the UK’s strengths are in services, pharmaceuticals, aerospace and the creative industries, where price is rarely decisive. Unit labour costs capture none of this, so the World Economic Forum’s index adds institutions, infrastructure, skills, market size and innovation. A fall in the pound does nothing for any of them.
Check: Germany exports machine tools at prices well above Chinese rivals and still gains market share. This shows:
In many markets buyers pay for reliability and design; unit cost measures miss this, which is why composite indices include innovation and skills.
The choice. Down the diagram, through lower pay or a cheaper currency, buys competitiveness at the cost of living standards and does not last. Rightward, through productivity, buys it permanently and lets wages follow. Supply-side policy (skills, infrastructure, R&D, planning, competition) is slow and uncertain; the UK’s 2008–2024 record shows how hard it is. There is no durable alternative.
Check: Which policy is most likely to raise competitiveness durably?
Depreciation is eroded by inflation, wage freezes lower living standards and cannot last, tariffs invite retaliation. Only productivity moves the economy to a lower ray while wages grow.
The new point is at £48 of output and £28.80 of pay: 28.8 ÷ 48 = 0.60, the same ray as before. If wages rise in proportion to productivity, unit labour cost is unchanged and competitiveness has not improved. The gain only appears if output per hour rises faster than pay.
Evaluate the view that a depreciation of the currency is the most effective way for a country to improve its international competitiveness.
International competitiveness is the ability of a country’s firms to sell in world markets, measured by relative unit labour costs, relative export prices and the real exchange rate, and shaped by non-price factors such as quality and reliability as well as by cost. A depreciation improves price competitiveness immediately: a 14% fall in the currency offsets a 14% rise in unit labour costs, so exports are cheaper in foreign markets and imports dearer at home without any change inside the economy. Britain has used this route repeatedly, in 1992, 2008 and 2016, and each time export volumes recovered once the J-curve had passed and the Marshall–Lerner condition took hold.
The case for depreciation is speed and reach: it works on every exporter at once, needs no legislation and avoids the painful alternative of cutting wages. It is the natural adjustment of a floating currency to an uncompetitive economy, which is why uncompetitive economies see their currencies fall.
**However,** it buys competitiveness by making the country poorer. Dearer imports raise inflation, which feeds into wages and costs and erodes the gain within a few years unless productivity rises; sterling’s fall after 2008 was followed by a decade in which unit labour costs climbed back and the current account deficit widened. Depreciation does nothing for output per hour, which grew 0.4% a year in the UK between 2008 and 2024 against 1.8% in the decade before, and nothing for quality, design or reliability, on which Germany and Switzerland compete at high prices. On the unit labour cost diagram a depreciation moves the country down to a lower ray in foreign-currency terms while leaving it exactly where it was in domestic terms; a rise in productivity moves it rightward to a lower ray permanently and lets wages rise later. Economies inside the euro, which cannot devalue, show the point from the other side: Italy’s unit labour costs rose 20–30% relative to Germany’s in the 2000s and its exports stagnated, because the short cut was closed and the productivity gap beneath it exposed.
On balance a depreciation is the fastest way to improve price competitiveness and the least durable; it treats the symptom. The most effective route is higher productivity through investment, skills, infrastructure and competition, which is slow and uncertain but is the only one that raises competitiveness and living standards together, and it must be paired with the non-price strengths that let a rich country sell at rich-country prices. Depreciation is best seen as the adjustment that buys time for that, not as a strategy in itself.
Productivity figures: ONS labour productivity releases and the September 2026 methodological revision (output per hour growth 2009–2019 revised from about 0.7% to 1.3% a year; pre-crisis average about 2%); ONS-based comparison of 1998–2008 and 2008–2024 growth rates (UK 1.8% and 0.4%; EU27 1.6% and 0.8%); Resolution Foundation, August 2026. The countries on the diagram are invented. Diagrams drawn with Rough.js and perfect-freehand, both MIT licensed.