I got really lucky when I switched jobs about a year and a half ago and found a company that actually is comfortable with me just working my 8-5. It also has basically an unlimited leave policy, so I'll take about five weeks off this year. The work is interesting/varied enough, the people are pleasant and reasonable, I have a GREAT boss (and am lined up to take her job if she leaves, so I'm not in imminent danger of getting a terrible one any time soon), and I feel valued. That said, they do not support part-time work, and my job is kind of hard to do part-time anyway because you are sort of on-call around the technical people's schedule. My hope is to do freelance technical writing/editing after I FIRE so that I can keep my skills fresh just in case, but dictate when and how much I work.
I was approached recently to interview at a different company after a friend left them; they were offering 50% more pay, but I knew from my friend that the work environment was awful. Long hours, unreasonable expectations, very little understanding of what the purpose of the role actually was. I didn't take the interview even though it would have moved up my FIRE date because I have no desire to be stressed out by my job on a daily basis.