I actually signed a contract like that back in the late 90s when Y2K business was starting to build. To be fair, the training involved moving me 2000 miles from

I actually signed a contract like that back in the late 90s when Y2K business was starting to build. To be fair, the training involved moving me 2000 miles from home for 3 months and my employer provided my housing and a per diem along with a reasonably intense "boot camp", so they actually spent money on my training. I think I had to stay a year. They kept me for 6 years, so it worked out for both of us.