Seniority offers protections. Protections that a junior man can't take your bid, your desired vacation day, protection that you won't get laid off while a junior man works. Overtime opportunities on scheduled days off before they are offered to somebody junior, etc.I thought we were discussing protections. Seniority is another subject.
And explain to me what “at will” means again. You can come back with something better than horseshit.
I called horseshit because I wasn't going to waste bandwidth trying to explain to you the various protections you had. If you said you had more at a union barn I would have absolutely agreed. Claiming you only had one at the non is ignorant at best.
Employed at the will of your employer. He loses the will, you lose your job. Simple.