The main problem with working the night shift is messing up your body's natural cycle. However, I know many normal peeps that do it well. I did for a summer in college and did okay with it, but that was pre-UC. I was just always tired and ready for a nap.
Making sure you get enough sleep - which for many with UC is upward of eight hours a night - and staying stress free are big helps.
Best of luck.
Pan-colitis and GERD diagnosed May 2003
Osteopenia diagnosed Feb 2006
Asacol 12 per day, Azathioprine 75mg, Aciphex, Effexor XR, Forvia and a Probiotic