An interesting article that compares waiters to "temporary employees" and that peoples' treatment of them reflects how they may treat their own employees some day:
http://www.usatoday.com/money/companies/management/2006-04-14-ceos-waiter-rule_x.htm
http://www.usatoday.com/money/companies/management/2006-04-14-ceos-waiter-rule_x.htm