When we have people working in our house, we ALWAYS offer them something to eat. If they are here at meal time, its usually a sandwich or something and juice. If they are just working for a long while and its not meal time, we usually just give them juice or soda with cookies, cake, or some "snack." Alcoholic beverages do not enter our house, so thats a big no. lol I don't think you HAVE to do it, but if you want to, go ahead.