The productivity claim has been removed from the Japanese report you link. An erratum at the bottom of the page dated November 8, 2019 says this: "In the annou

The productivity claim has been removed from the Japanese report you link. An erratum at the bottom of the page dated November 8, 2019 says this: "In the announcement dated October 31, one of the listed "improvements" from the 2019 Summer Work-Life Choice Challenge was an increase of 39.9% in labor productivity (sales revenue per employee) in August 2019 compared to August 2018, with a graph below. While this number is factual, it is not solely the result of this challenge, and was achieved due to a number of different factors. To avoid misunderstanding, we have removed that claim from the above summary of the direct effects of the challenge." Edit to add: >is this a sales office? "Every Friday in August 2019 was designated an office holiday. Permanent employees received special leave for those days, and all of the offices were closed."