Hull Prison Officers are pursuing legal action over a new pension scheme that would see them retire at 67.
The Prison Officers Association say the new scheme is simply unworkable and have started legal proceedings.
They claim it's unrealistic to expect anyone of that age to perform the difficult and potentially dangerous duties of a prison officer.
Operational Support Grades have voted in favour of strike action with regards to changes to the pension scheme.
Rob Nicholson is from Hull's POA. He says: "We're not asking to turn around and say let's retire at 45 or 50. We're turning round and saying 60 what we used to be able to retire at at one point is a reasonable pension age."