When you work for a Company that's 'open for business' 24/7, 365 days', it gives one a chance to gain much needed extra money, in O/T.
I did a stint, for six months only, of M-F, F/T day work, plus 4 hours S-S, each morning.
Other than that, I worked O/T every Sat morn, when possible, for 4 hours, my whole career.
That was my choice, & it fitted with our lifestyle, so no complaints from anyone.
If there was a financial 'emergency', eg new white good, or car mechanicing requirement, there was money put aside for that. Saved much anguish.