Honest opinion re work

[MrsCharlesDarwin]

I’ve handed in my notice at work where I am an admin assistant, and am working out 3 months notice period. We recently lost another staff member part of whose job it was to clean the workshop.
I’ve now been asked if I can pick up her duties until a replacement is found. I’m bad at saying no (my manager knows this) and stupidly said yes. So tomorrow I’m expected to go in and scrub an enormous sink that has never been cleaned properly, and I really don’t fucking want to.
Aibu to go in and say I made a mistake on agreeing to do that and don’t feel comfortable doing it. I will get filthy for a start and just feel pissed off at the idea.
Or shall I go in and do a crap job just hosing it down like everyone else has and just count the days until I am out of there?

Say you're allergic.

My manager is also shortly leaving.
My notice is only 1 month but she asked me to stay on until my replacement is found which will be around 3 months.
That pisses me off too, I really want to be out of there as resentment is starting.

So leave after one month - three months does not work for you!

do it badly... very badly lol

If your notice is only 1 month then they can ask you to stay longer, they certainly can’t insist. It sounds like they are taking advantage of you. Are you concerned they might refuse to provide a reference if you stick by your contract and leave after a month?

You agreed to work 3 times longer than your contractual notice period? With the greatest of respect OP, you need to practise saying 'no' and protecting your own interests. You might find that you earn more respect doing that than being a people-pleaser. I say this as a fellow 'yes woman'

If you only need to give a month, then give a month. Tell them you've changed your mind about accepting extra duties so you'll stick to your own role while working out notice.

When did you hand your notice in? Calculate 4 weeks from then.

Last day should be 24 May.
Everyone is so pleased how supportive and kind I am being by staying on until replacement is found. I would fee like I’m letting them down.
She is a trample-over-people type of person, very nice and personable, but just out for herself and worried about her own back.

I would stay if they don’t make me do shitty cleaning, but I can’t face that for 2 more months....

Turn over a new leaf and start standing up for yourself so that your next employer doesn’t treat you like shit. FYI rather than appreciating everything you do, they probably have zero respect for you and think you’re a total mug. Presumably you’re not the only person that works there so why do you think you’re the one they’ve asked you to take on the cleaning? Sorry if that sounds harsh, but you’re doing yourself no favours in letting them take complete and utter advantage of you. Tomorrow you should tell them it’s no longer possible for you to stay the extra 3 months so you’ll be leaving at the end of May as per your contractual notice. And you could also say that on reflection you’re not comfortable with the sink cleaning so they need to find someone else, or you could just do a shit job until you leave. But definitely get out of there ASAP.

Great advice.
I should have thought longer about it before saying yes.
I’ve never been treated like shit at work before now. And not planning to work again for a while, needed as a sahm for variety of reasons.

Ah that explains why there isn’t a future employer getting pissed off with your delayed start date! But in that case you don’t even need these users for a reference, all the more reason to tell them to get stuffed politely that you plan on leaving once you’ve worked your contractual notice. Good luck with being a SAHM, sounds like it will be a welcome change