Unlike revolutions in other Latin American countries, Haiti’s fight for freedom was "carried out by slaves," since this Revolution began (and ended, in many ways) with a slave revolt.
Answer:
A very long time ago, I'd say 1400's-1500's or even longer before that.
The cultural change that resulted from an eight hour workday was that leisure times was "invented" people suddenly had more time as they were able to work for only 8 hours, they could spend other time doing other things.
