EMTs and Paramedics shifts on ALS, CCT, NICU/PICU shifts, only one BLS unit: Five 12-hour days, two days off, two 12-hour days, five days off.
Most RNs on CCT shifts: Seven 12-hour days, seven days off.
Most BLS shifts, some ALS and CCT: Five 8-hour days.
I believe a few BLS shifts: Four 10-hour days.
Part timers must make themselves available 72 hours per pay period (2-weeks). I forget how often they have to work, if ever.
It used to be for most people four 12-hour shifts on, three days off, three 12-hour shifts, 4 days off regardless of BLS, ALS, CCT, etc. I wish it was still like that.
At my previous company, we had 4, 5, 6, 8, 10, 12, and 24 hour shifts. 24 hour shifts were exclusive to RNs. Few 12-hour shifts, pretty much only dedicated NICU/PICU only. Most shifts were either 4 hours "strike shifts" or 10 hour shifts. You'd work four 10-hour shifts every week.