Originally Posted by
clvf88
Can you imagine if, say, Starbucks introduced a totally new menu and staff had to go on a three day course to learn about it. They're told that the course would cost the company £1500 each. If they leave in the next 3 years, they will have to reimburse the company. They have no option but to do it or resign.

That's a completely fallacious argument though - in your example the Starbucks employee is only gaining something of any value when working for Starbucks.