“This category is used for work during Fridays, Saturdays, Sundays (0600 – 1800), when there is no work on other days” (Hurrell, 2003, no page).
Hurrell, K. (2003, March). Statistics on shiftwork: Survey questions, definitions and classifications. Retrieved August 3, 2005, from http://www.iwh.on.ca/media/images/Shiftwork.pdf