To think 4 months is an excessive notice period?

[CulturalBear]

There's a chance I may be offered a chance to upgrade to next band at work (public sector job, sigh) following lots of departures plus the fact that I'm supervising people on the same band as me.

Going up a band would give me a hefty payrise - £3-4k and presumably a title. Downside is that I'd have to sign up to a 4-month notice period, which I think is ridiculous.

It's not a hugely specialised role, would involve supervising 3-5 people, and certainly not difficult to replace. If I were to move to a similar role externally, I anticipate that businesses would be very unhappy for me to honour that.

AIBU to think it's so excessive that I'd consider not taking the promotion (if offered?)?

Thank you collective. I have to say I'm really shocked that this is so widespread!

I have had firms complain to me in the past about 4-week notice periods, and I know if I were to head back into my previous arena, 4 months would definitely be a problem.

3 months seems like an eternity, let alone 4! Will have to weigh up the options carefully when the time comes.