I was looking for facts to disprove your point, but it seems we actually work more than our ancestors.
Medieval folks and hunter-gatherers had plenty of time off. It wasn't until the industrial revolution that we started extending our workweek.
Here's a nice summary of how the workweek looked like, from the AskHistorians subreddit: https://www.reddit.com/r/AskHistorians/comments/1rf0lb/comme...