Posted another thread a few weeks ago and don't really want to go into all that again, but brief summary, my boss tried to cancel my booked holiday two days in advance because colleague 1 had been forced to take early maternity leave unexpectedly. Couldn't persuade anyone else to cover the shift so told me I would have to cancel my holiday booked for that day as my cover was needed to cover colleague 1. I had worked xmas day on the basis I would get this day off, eventual outcome was colleague 2 was persuaded to cover my shift. Maternity cover for colleague 1 eventually started a week later, boss had struggled finding cover.
Colleague 3 is also pregnant, and has just put in a request to start early maternity leave. Boss is freaking out slightly over this as colleague 3 had said she would start maternity leave much later iyswim, colleague 1 was early but not this early. Cover has been found, but will not do weekend shifts. I have been 'asked' if I will take on colleague 3's Sunday shift until an alternative solution is found. I am allowed to say no, although colleague 3 and other colleagues are putting a lot of pressure on me to do this.
I already work Saturday mornings and am a single parent. Not left with a lot of time when I would actually see my child if I were also working Sundays! I would get another half day off during the week but no guarantee what hours this will be. Childcare on Sundays would be an absolute nightmare. No one else works both days at the weekend, and lots don't work weekends at all. AIBU to tell them to ask pressurise someone else?