Some employees carefully watch their deferral contributions with each paycheck as they go into their 401(k) or 403(b) plan account. After all, it is their money – wages they’ve set aside to be paid later! But how quickly must the deposit be made? Employers often misunderstand the deposit timing rules for employee deferrals. In this article, we will explain the rules, exceptions, and consequences, along with the options available for fixing late deposits.