> Perhaps by not asking for his bonus, the employee lost his opportunity to make a claim, and cannot make a claim after resigning.
That would depend in the terms specified in the contract. If the entirety of the contract is the email message which says "We'll pay 10K for a referral that lasts 6 months", then it defaults to the contract laws in their state. I can guarantee that the contract laws of their state do not say "debts owed to employees are void after employment is terminated."
> How long is he allowed he wait? 10 years? 100 years?
Most, probably all, states also have a law defining what the limit on collecting a debt is. It usually falls between 3 and 6 years, and is considerably longer in a few.
That would depend in the terms specified in the contract. If the entirety of the contract is the email message which says "We'll pay 10K for a referral that lasts 6 months", then it defaults to the contract laws in their state. I can guarantee that the contract laws of their state do not say "debts owed to employees are void after employment is terminated."
> How long is he allowed he wait? 10 years? 100 years?
Most, probably all, states also have a law defining what the limit on collecting a debt is. It usually falls between 3 and 6 years, and is considerably longer in a few.