market forces
At the moment they can get away with this sort of stunt but the market will change and people who do this sort of thing will have to change the way they recrute staff.
I see the start of this in the pilot sector with type rated pilots for the NG737 and A320 having no trouble finding jobs and type rating courses for the more experienced paid for by the company.
As aviation picks its self up after the disaster of the last two years things will change and the poor employers will be forced to improve the recrutment and empolyment policys or down size as the workers leave for better jobs.