Because retiree's are below the Part time work staff level when it comes to contract negotiations. The current working people could care less about retiree's. At least that's how it is here.
Seems to be there could a struggle in the upcoming vote, between the soon to be retiring, active union rank n file member and the up and coming, not so active rank n file. From what I hear in our center, the near to retirement guys are so laser focused on what the next Pension will be, they may voluntarily bypass wage increase, better health, the fight over 22.4 language, etc.
A balanced labor union represented by everyone is important, to come up with the best contract covering the widest scope of benefits and wages alike.