OTOH, if this is in the US, we are almost entirely at-will when it comes to employment; we can be terminated at any time, for something as petty as the boss not liking our socks, no heads-up required.
Here the two weeks notice is considered a courtesy, and sadly fewer and fewer businesses are proving worthy of that courtesy. It seems from the post title that this company did not deserve much respect at all.
1/3? Man, those are rookie numbers. Something like 80% of my home state were members at one time.
(Which makes sense, as back then we had actual laws on the books that made us a ‘whites only’ state.)