Sipti1983
I think it can work both ways though. I have a friend, who took redundancy from work one day and took over child care for her daughter the next. Her husband and her had discussed this before hand and he had made it clear that he didn't want to spend his free time as a childminder, even though he loved his grandchildren. He felt they were in their twilight years and wanted to spend time together as they had always worked very hard. His wife however just wanted to spend time with their grandchildren and could not understand why her husband did not. It caused a lasting problem in their relationship. It can work two ways. I'm not sure why OP's husband is jealous, whether its because he wants more time with the grandchildren himself or of the time they are not spending together as a couple, but clearly its a discussion they have to have.
Before I was made redundant from my job OH used to collect one GS from school a couple of afternoons a week and I would cook him tea when I came in from work.
Now that I'm at home we now have two GS a couple of afternoons a week after school but also have our youngest GS three days while his Mum works part time.
We made it clear that if we were around that we would look after GC if they were poorly in an emergency but we were doing childcare on 3 days only whether we had one or five of them. That way we had four days a week to do as we wished without being tied to childcare issues. We also swap with other grandparents if they are taking a break away on holiday etc or if we are away ourselves.
It sounds a little mercenary but I can understand the situation above - and plenty of people will no doubt in agreement but it is something that needs to be discussed by all concerned to avoid conflict.
As my sister put it when she and her OH retired but looked after their GC they looked forward to every Monday being a a Bank holiday Monday!!
We love our time with our GC but the peace afterwards is bliss some days