40? What are you? French?
I can't remember a non-vacation week in my life where I've worked less than 50. Right now it's 7 days a week, 10 hrs per day. Even if 5 hours per week are personal like FBG (stress relief I guess), it's still 65. And it's my own business, so no boss (well, except the clients).
I remember my annual review with my PwC partner about 20 years ago. What they cared about was utilization rate (how many billable hours we had, 45 being standard per week for PwC). I had averaged 54 that year. Well the threshold to even get a bonus was 50 billable plus 10 non-billable working on proposals and such. He was a friend, so he gave me a small bonus since I had done no unbillable, and he put me on a proposal team. So I then went 10 hours per day to my billable job, then 2 hours per night to work on non-billable activities, plus some weekend work. Yes it paid off. Huge bonuses.
Luckily I got a couple of years where I didn't have to work at all. Just watched my kids. But not working 9 hours a day would be zzz. I can't imagine what retirees enjoy. I love golf and TV and all that. But everyday? So zzz.
ETA: people should be proud to get to work. and do so in a good country. there's reasons people want to come here. Jobs one of them.