I think there are certain workplaces which have the culture where this would work as intended but in most, it would probably end with people taking less time, a

I think there are certain workplaces which have the culture where this would work as intended but in most, it would probably end with people taking less time, and feeling bitter and resentful about it. If anything, there should be a vacation day minimum. You can give people flexibility in how much time they take off and when, but they should take at least X days off per year. That way there is a standard set that it is okay to take the time off when you need it.