People have been trying to demonstrate effects of Denmark's 1992 change from 40-hour workweeks to 37-hour workweeks, but afaict nobody's come up with much that'

People have been trying to demonstrate effects of Denmark's 1992 change from 40-hour workweeks to 37-hour workweeks, but afaict nobody's come up with much that's solid, whether showing a negative impact on output, a positive impact on employment, or much of anything else except the mere fact that hours worked per week went down. There are a lot of before-the-fact theoretical papers, from the late '80s and early '90s, but post-1992 nobody seems to have succeeded in validating them. That doesn't mean there was no economic effect, but at the very least it doesn't seem to have been a particularly large one.