:comp: Where each shift/crew person has a separate duty list for their area - keep copies of these lists on a floppy disk in rtf or word docs and store in a place known-to-all crew.
Then if someone calls in sick and a sub comes in there will be a printable duty list for her or him.
Also printing out several copies of each duty list and always keeping them in a visible spot within each custodial closet, (like tacked to a wall near the door at eye level or on a clipboard).
Having that floppy ..any updating and area job task changes can be easy edited and saved. Plus when the closets run out any crew member can print out more lists.