I no longer work. But when I did it depended on if I was in a flare or not. I could go a year without taking time off due to Crohn's. At the end before I decided to stay home I was taking time off every month. Usually 1-2 days a month.
After that I landed myself in the hospital. When I was released I quit because how bad off I was and the doctor advised I stay as stress free as possible. I'm a lot healthier now that I'm not working.