One thing that will help is the planned raising of the minimum wage in Japan, from around 800 yen/hour now to 1000 yen/hour in 2020. [0] The minimum wage in Japan is below-average by most measures for OECD countries. [1]

[0] http://www.japantimes.co.jp/opinion/2015/12/11/editorials/mu...

[1] http://www.oecd.org/social/Focus-on-Minimum-Wages-after-the-...