I hate to say it friend but when you get hired through a third-party staffing agency you are always subject to the clients rules when you arrive on site to work now with that being said I still don't believe forcing a jab the day you begin work is legal especially when it's not FDA-approved but as far as the mask goes that's up to the client you were contracted to work for. If they require it as a private company in my experience you'd have to oblige. I've gone through the same exact thing with shaving my entire beard. Sounds weird but I am a welder who was contracted to a site that required clean shaven after years of working for the third party without having to.
I hate to say it friend but when you get hired through a third-party staffing agency you are always subject to the clients rules when you arrive on site to work now with that being said I still don't believe forcing a jab the day you begin work is legal especially when it's not FDA-approved but as far as the mask goes that's up to the client you were contracted to work for. If they require it as a private company in my experience you'd have to oblige. I've gone through the same exact thing with shaving my entire beard. Sounds weird but I am a welder who was contracted to a site that required clean shaven after years of working for the third party without having to.
No, OP is not obligated to get the death shot.