I joined a startup back in 2009 and negotiated a 4 day work week for a 20% reduction in pay. Spent my day off doing community ministry work in a poor neighbourhood. It was great. The day off provided fulfilment that the job never would have.
It helped that we were in the middle of the GFC and the idea of 9 day fortnights were in the news as a way for employers to cut costs.
Later I managed to keep that job and work remotely, living in a smaller town with low living costs. Even better! The small town also had fibre in our street so for a while I had faster internet than head office :-)