Last month, he called on companies to hike pay at a level above inflation, with some already heeding the call.
Last month, Japan recorded its biggest drop in earnings, once inflation is taken into account, in nearly a decade.
A changing job marketExperts say Japan’s wages have also suffered because it lags in another metric: its productivity rate.
Hideya Tokiyoshi, a teacher in Japan, told CNN he had barely seen his salary go up over the last 30 years.
“If some of the biggest companies in Japan raise wages, many other firms will follow,” if only to stay competitive, said Yamaguchi.