関連ワード:
who created five day work week who created the 5 day work week who came up with five day work week who created the 5 day work week uk who made the 5 day work week who established the 5 day work week who designed the 5 day work week who created the 5 day 40 hour work week who started the 5 day work week who decided the work week was 5 days
