The last 12 years it has been a rotation every month, 1st shift to 3rd shift to 2nd shift, 3rd shift month was a throwaway month for me the only way it worked for me was if there was weekend work just do 30 days straight on night shift so I could stay on a sleep schedule, we had so much turnover that we went to straight shifts and I am on day shift only and I feel so much better and get so much more accomplished at home. Doug