Typically it is legal for a company you work for to send you to training, but then bill you (typically prorated) for the training cost if you leave the company

Typically it is legal for a company you work for to send you to training, but then bill you (typically prorated) for the training cost if you leave the company within a specified time after. And that seems somewhat reasonable in many cases. But then again, a company can come up with "mandatory" annual training with an inflated cost, with a 2-year escape clause, to effectively prevent employees from leaving.