I was a care giver fir disabled people. I worked half way into may then went on leave and had my son start of July. The only reason I went of early was because some of the residents was violent and I was no where near prepared to have him so I used those 7 weeks to buy everything and get everything ready for him. It's when ever you feel ready tho I found that doing 14 hours a day was becoming to much by the end of the night I would get home eat dinner at ten go bed be up and ready for 8 and do the same again.
I worked all the way up into my pregnancy (37 weeks) doing fast food I worked an 8hour shift came home took a shower started contracting!!
I'm a bartender/waitress and I'm 31 weeks and I already told my boss I'm done at 37 weeks since for me that lines up with the end of January and is when pregnancy is considered full term.
With my first I worked up until my water broke. And I plan to do the same with this baby. I'm a toll collector and have to work long hours stand for long periods of time and lift a lot of money at once and stretch to what feels like ungodly lengths. But to each their own