When I first started with my current employer I was given a system with RHEL preinstalled and I replaced it with Fedora on my first day. I was told to use LUKS and given a normal OpenVPN profile but otherwise they don't control or monitor anything about my workstation. No matter how many years or decades I stay at this company, it's extremely unlikely I'll ever touch an OS that isn't Linux-based during work time.
Every previous job I've been at also had me use Linux for my primary workstation, because my field of work more or less requires it, but some have needed me to access a separate Windows system/server/VM on rare occasions.