Nearly 100 years ago, John Maynard Keynes said that by now we'd be working just 15 hours a week, because productivity gains would mean we could get a whole work-week of work done in that time.

In reality, higher productivity just means companies can do more with the same amount of time/effort, and so nothing will change. Wage-slaving will still be wage-slaving. We won't move the bar toward more leisure time; we'll move the bar toward more work completed in the same amount of time.

Then again, the labor movement gave us the 5-day work week, and the concept of weekends for resting from work. Maybe a new labor movement can give us more days a week off. Labor movements have been declining of late, of course, but perhaps that sort of thing can be reversed.