I've worked shift work all my life. Rostered minimum 48 hrs in 4 days, usually more like 53-55, often 60 in five days, then 3 off, rinse and repeat. Days and nights. My Brother in law works 96 hrs in 8 days - 8 on 8 off. No sleeps on shift. Alert and working the whole time. How do you think a shift, 2 days off, a shift, 2 days off, a shift, 1 day off, a shift, then you're done for a couple of weeks sounds like to him?