Telling employees their right to the benefit is not irrevocable .
Is dependent on some condition ( working another five years , for instance ) may prevent the money from being currently taxable , but it may also weaken employee belief that the benefit is real .
Telling employees their right to the benefit is not irrevocable or is dependent on some condition ( working another five years , for instance ) may prevent the money from being currently taxable , but it may also weaken employee belief that the benefit is real .