AIBU to refuse looking after my sister's children more?

So getting work other that during the week " is not possible"?

Much easier to have a skivvy sister give her free childcare than pay for it and be held to times.

Only a completely selfish pisstaker would ask for this.

You're a much better person than me, I wouldn't agree to any of it (granted...I have major health issues too) but definitely need the weekends to relax. Your sister needs to figure it out herself or not take the job and find one that works around her childcare.

Can't she get a teenager in to mind them.
I did that on a Saturday for a lady that worked weekends.
Of course you want your own family time at weekends, as anybody would.

It's too big of an ask, except for someone who needs the money

You can say no, there are plenty of nannies and babysitters looking for work.

Exactly!

I think more people need to start saying this to people looking for free childcare. It's a pisstake.

You have already been more than generous with your offer of help, and more generous than I would have been! It’s up to your sister and her H to find a solution that works, and that does not include trying to guilt-trip you in the process.

I’ve suggested she looks for a different job or her partner changes his job or hours but she says that’s not possible.

Then she can’t do that job. It’s still not your problem.

I think you need to say No. Full stop. The end.
The old Mumsnet favourite "No is a complete sentence" is the only answer here.

Because it is a slippery slope and you know that you will end up doing more and more.

It is not for you to solve this for your sister and it is ok to need time for yourself and your family on the weekend.

If she and her husband want to work weekends, they will have days off during the week, but the want you to give up your days at the weekend to look after their kids! Crazy. Glad you have said no!

You’re being very generous. I wouldn’t have offered anything at all. If her own husband can’t even be bothered to look after his children at the weekend, why on earth should you? I don’t care what his job is. It’s always women who are tripping over themselves trying to organise childcare while men just swan off to their very important jobs. It’s like feminism never happened.

Good grief. So she expects you to work full time, care for your own children and then care for hers at the weekends? Does she think you're an automaton that never needs a rest or change of scene?

Bugger that for a game of soldiers. if it was for a month or two maybe, but this could go on for years. Her career and childcare issues are not yours to solve.

If they both work weekends, then they must have days off during the week, meaning childcare isn't needed on those days. So they should find a childminder who does weekends and minimise costs as much as possible on week days. You could offer some occasional emergency cover but not commit to every weekend - you need your weekends to recover from your week!

Yes me too.

I like to stick a "Nope" behind my " because I don't want to.

I like it and people around me are having to get used to it here.

Why on earth has she had all these children? She must have known this before she had them. I would have NEVER imposed my children on anyone when they were this young. Mine are older now too and the thought of looking after kids again would tip me over the edge! I'm just a taxi now for my two teens. But inbetweeners I relish the peace and the silence. No way would I have small kids running round. Especially when they aren't your own aswell.

If she and the children's father work both weekend days every week, don't they each have some time off on weekdays? Perhaps they can spend that time with the children and save the paid childminding for the weekends until one or both can make a job or career change. Or if they have a spare room, how about an au pair? Really up to them to explore available options and figure out what works, though, and unfair to act as if it's your fault they can't see any.

What a cheeky mare she is!!!

Completely agree!

A household can’t often support two weekend-workers. That’s life and it’s their problem to look at different jobs, not yours to solve free, so they can earn more money!

2 parents on the scene and she is being a really cf. You’d be mad to agree to any days at all. You work Mon-Fri and are taking your own dc to various activities at the weekend, so you’d be seriously limited as to how many dc can fit in the car. What if you want to go away over a weekend? Will she go mad?!

What is it your sister does? Is it normal to have to work both weekend days in her industry, or is this something she's decided would work best for them as you can provide free childcare on those days?
Either way YANBU to say no

Symptoms of what?

She is a CF of the highest order for even asking. You’re nuts to offer what you have. Enjoy the quiet weekends you have earned and let her solve her own childcare problems.

She is saying she won’t be able to go back to work if I don’t have them as she doesn’t have anyone else.

The only answer to this is: "True, you won't be able to go back to work then." And not discuss it any further.

I’m another saying you can say straight no, you don’t need to do any weekends. She and her dh can work it between them, it might mean one or both of them having different jobs or different shifts. Or if it’s well paid enough, hiring a weekend nanny. But this isn’t your job to fix. You can’t work 7 days a week and yes, caring for someone else’s child is working.

No one in your household, yourself included, wants this. Don’t upset yourself and your family for fear of upsetting your sister. This is her problem, and you are not the solution. You have no reason to feel guilty or that you should do this. YANBU.