Typical Clawback Structure for Employer Sponsored Masters Degree

Hello WSO -

Can anyone out there share common clawback structures for employer-sponsored Masters degrees?

I have been accepted to a local program and my manager(s) are working on a proposal. Their initial proposal is a 1 year clawback period upon completion of the degree. The degree would take 2 years (I'll be doing the degree part-time and continue to work at my current role) so it would effectively be 3 years of clawback.

Is it unheard of to have the cost begin to amortize when I start the degree since I would still be working full-time?

Thanks in advance.