II.off [美 ɔf, ɑf, 英 ɒf]副off often appears as the second element of certain verb structures in English (break off, pay off, take off, etc). For translations, see the relevant verb entry (break, pay, take, etc).
I.on [美 ɑn, ɔn, 英 ɒn]介词on often appears as the second element of certain verb structures in English (count on, lay on, sign on, etc). For translations, see the relevant verb entry (count, lay, sign, etc).
By forcing them to work longer and then taking part of their pension off them if they can't physically cope when they are close to retirement is fundamentally unfair.
We really need to start kicking the tyres of our internet infrastructure, pension off those aspects that are past their use-by date and introduce better, newer methods.