Oh dear,
I used to put in loads more time than I was paid for, in my early days of employment...
Not to get a pay increase or promotion, but coz I loved my work, was youthfully enthusiastic.... and maybe a little bit stupid!
I'm not sure that I'd want to work for an organisation that only looks at you for pay increase/promotion, if I'd need to work for no pay... that says more about them, than it would about me.
I guess I've never worked in a cutthroat org', so I may not know what I'm talking about.
If that's what it takes, and your happy to live like that, then that's down to your choice, and where you set your boundaries.
The last place I ever worked at, was all about targets and wringing you out IF you let them.,,, there was never a chance of either pay increase or promotion for slogging yourself, so I didn't.
After I left that org', and passed by that building afterward, I had an enormous sense of relief and gratefulness that I no longer had anything to do with them.
My income was a lot less, but my sense of freedom grew, and I became much more money savvy with my lesser income.
The way it affected me, was I became poorer in savings, but a hell of a lot richer in self esteem and that (to me) was empowering as well as surprising.
I expect I'm in the minority, but that's cool.