Productivity-Wage Divergence

Productivity-wage divergence occurs when output per worker or per hour rises faster than workers’ inflation-adjusted pay. Labour productivity measures output relative to labour input, while real wages measure the purchasing power of earnings; higher productivity creates scope for higher wages but does not guarantee that workers receive the gains.

Productivity gains need not become wage gains

Productivity can rise because workers use better machinery, technology, skills or organisation. How the additional income is distributed depends on labour demand, market conditions and wage-setting institutions.

• A falling labour share means that a smaller proportion of income accrues to labour, allowing productivity to grow faster than average labour compensation.
• Under competitive conditions, firms relate hiring to the marginal product of labour, which is the additional output from another unit of labour, rather than simply to average output per worker.
• Labour-saving technology can raise output per worker while reducing demand for particular tasks, limiting wage gains for workers whose skills are displaced.

Labour-market conditions can restrain wages

Workers’ ability to secure higher pay depends partly on their alternatives and bargaining position. Productivity growth alone does not remove these constraints.

• Unemployment and underemployment can weaken bargaining power, particularly when many workers compete for a limited number of productive jobs.
• In informal employment, weak organisation and limited effective coverage or enforcement of wage protections can restrict workers’ ability to claim productivity gains.
• Skills shortages may raise earnings for some workers while others remain in low-paid activities, so average productivity gains need not translate into broadly shared wage increases.

Prices and averages can widen the apparent gap

Inclusive growth therefore requires both productivity improvement and conditions that spread its benefits, including productive employment, skills, labour mobility and effective wage protection.

• Real wages stagnate when nominal wage increases merely match the rise in workers’ cost of living.
• Productivity and wages may use different price deflators: output prices measure real production, whereas consumer prices measure purchasing power; their differing movements can affect the measured gap.
• Aggregate productivity can rise as employment shifts towards more productive sectors, even without comparable wage increases within each sector.
• Average labour compensation, cash wages and the median worker’s earnings are different measures; employer-provided benefits and unequal wage gains can make their trends diverge.