Japan should crack down on excessive unpaid overtime in order to boost productivity, as the nation¡¯s irreversible labor shortage means companies must streamline to cope with fewer people, according to Goldman Sachs Group Inc. chief Japan economist.

¡°A small portion of overtime goes into the pay slip and I think the government should put a greater focus on unpaid overtime,¡± Naohiko Baba said in an interview Wednesday. ¡°When you crack down on unpaid overtime and shift the focus to work-and-life balance, it will make it easier for people to enjoy leisure hours and spend their money.¡±

The government is seeking to raise labor productivity to help cope with a shrinking population, and limiting overtime is part of that. That was brought into sharp focus after the suicide of an employee of the nation¡¯s largest ad agency in 2015, but the extent of the problem is partly hidden.