My father is currently paying permanent alimony, what happens once he retires?

Question Details:

The judge ruled that my mother cannot collect any of my father's retirement. Currently he is paying permanent alimony and has been over the past 7 years. My father works for the state and wants to retire soon (will be 59 at desired retirement time). He will be living off his retirement and plans on going back to court to modify the alimony. Since he will be living off his retirement and my mother is not suppose to collect any of it, can he have the alimony reduced to zero or stopped? Or does he have to wait until he is 65 years old (the normal retirement age)? Important Notice