A previous job of mine wanted people in my team to volunteer for being on call overnight for a week at a time.

No-one did, so they forced us. I emailed all managers involved including HR I said that I would like to opt-out for various reasons like family, mental and physical health, and also that the pay was in no way adequate for what they wanted. Again they pushed, so I replied with I'll do it but would be unavailable most afternoons and evenings with my kids and things they have on. That I also won't be able to answer after going to sleep because I take my mental health very seriously and need quality sleep to function.

So the first night I slept peacefully as I normally do as I have my phone set to go to DND automatically. I got called in because I didn't answer a call that came in last night, I asked when it was, about midnight, and said well that's because I was asleep.

Go to the next 2 mangers up, say the same thing and they say that I need to answer. I explain the email stating that I would be unable to answer calls at many times including when asleep and how no-one replied with that being a problem. One of the managers was like, wait up, you flagged this; yup; can you send me the email chain; yup. Got removed and told I wouldn't need to worry about doing it anymore.

It found a new job shortly after that.