I've been with a company for two years. My initial training was done on the clock, but since then, all other training (we get new online training about once every few months) is done outside of work. It's required, and long ago I was told I would be paid for it, but I have not noticed it on any paychecks.
Similarly, the few first meetings were paid for, but since then I did not notice them on my paychecks either. I've asked and my boss said they were included.
When other co-workers said they were not paid either, I concluded that we just would not be paid for it. Then, I did some research, and I found that employers are required to pay for training and meetings.
I have not spoken to my boss about these potential missing payments for the past six months, and I've already put in my two weeks notice.
Would it be best to approach my boss about this matter (again), or contact HR? I have no proof I wasn't paid, but I have no proof I was, either.