The Productivity Slump and the Wage Puzzle
An economy has had labour productivity growth of 0.4% a year for five years, down from 1.8% previously. Real wages have grown 0.6% a year over the same period, while nominal wages grew 3.5% and consumer prices rose 3.0%. Unemployment is 4.2% and inflation is 3.0%, at the top of the 2–3% target band. The participation rate is 67.1%, up from 66.4% five years ago, and hours worked per worker have fallen slightly. Business investment as a share of GDP has fallen from 17% to 15%. The government proposes a 2% cut in company tax, arguing it will lift investment and productivity. The central bank says it will not cut rates until productivity improves.
1. Calculate the approximate growth in real wages and explain why real wage growth has been weak, using the productivity data.
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Calculation: real wage growth ≈ nominal wage growth − inflation = 3.5% − 3.0% = 0.5%. The stated figure of 0.6% is consistent once compounding is allowed for. So workers' purchasing power is barely rising.
Why real wages are weak:
Productivity is the main long-run driver of real wages. Output per hour grew only 0.4% a year. If each worker produces only slightly more, firms cannot pay much more in real terms without squeezing profits or raising prices. Real wage growth of 0.5–0.6% is roughly in line with that productivity figure - the wage outcome is not a mystery, it is what the productivity data predict.
Labour supply has expanded. Participation rose from 66.4% to 67.1%, adding workers. More labour supply with weak investment means less bargaining power for workers, so nominal wages stay near inflation.
Investment is falling. Business investment down from 17% to 15% of GDP means less capital per worker, which limits the growth in output per hour - a capital shallowing effect.
Judgement: real wages are not being held down mainly by greedy firms or by unions; the arithmetic ties them to productivity. Policies that raise productivity are the sustainable route to higher real wages; wage subsidies or minimum wage rises without productivity gains would feed into prices and be eroded by inflation.
2. Evaluate the government's proposed 2% company tax cut as a way to lift productivity, and assess the central bank's position.
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Case for the tax cut: lower company tax raises the after-tax return on investment, which should raise investment as a share of GDP, add capital per worker and lift output per hour. It may also attract foreign investment. If it works, it addresses the root cause identified in the data - falling investment and weak productivity.
Case against / limits:
- Size and timing. A 2% cut is modest against a 2-percentage-point fall in investment share; the response may be small and slow, with benefits arriving after several years.
- Uncertainty of transmission. Firms may use the extra cash for dividends or share buybacks rather than new capital, especially with the central bank holding rates high and demand uncertain.
- Fiscal cost and opportunity cost. Revenue forgone could fund infrastructure, skills or R&D, which may have a higher productivity return.
- Distribution. Benefits accrue mainly to owners of capital, while the wage gain is indirect and delayed, which matters given weak real wage growth.
Central bank position: with inflation at 3.0%, the top of the band, and unemployment at 4.2%, there is little room to cut. Holding rates until productivity improves is defensible because productivity gains are disinflationary - they raise supply, easing price pressure without suppressing demand. But waiting for productivity before easing risks over-restricting demand if the productivity slump is structural and slow to reverse; the bank may be asking fiscal policy to do work that monetary policy cannot do.
Judgement: the tax cut is a plausible but slow and uncertain lever. A package combining it with skills, infrastructure and competition policy is more likely to shift productivity than the tax cut alone, and the central bank should judge inflation data rather than productivity forecasts.