Policymakers must act before the lack of productivity and real wage growth causes further political upheavals

In all major economies, the so-called productivity puzzle continues to perplex economists and policymakers: output per hour is significantly lower than it would have been had the pre-2008 growth trend continued. The figures are stark, particularly so in the UK, but also across the OECD. And while it goes without saying that economists have many ingenious explanations to offer, none has yet proved persuasive enough to create a consensus.

According to the UK’s Office for National Statistics, output per hour in France was 14% lower in 2015 than it would have been had the previously normal trend growth rate been matched. Output was 9% lower in the US and 8% lower in Germany, which has remained the top performer among developed economies, albeit only in relative terms. If this new, lower growth rate persists, by 2021 average incomes in the US will be 16% lower than they would have been had the country maintained the roughly 2% annual productivity gain experienced since 1945.

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