How many years do you have to play in the NFL to get a pension?

How many years do you have to play in the NFL to get a pension? How do NFL players qualify for the pension? Once a player has been on an active roster for three years (or on injured reserve) they become fully vested, which means they qualify for the full NFL pension.

How do NFL players qualify for the pension? Once a player has been on an active roster for three years (or on injured reserve) they become fully vested, which means they qualify for the full NFL pension.