"It all depends on the size and location of the wedding and the size of your department," says Elise Mac Adam, author of "Something New: Wedding Etiquette for Rule Breakers, Traditionalists, and Everyone in Between" (Simon Spotlight Entertainment; 2008). If you're throwing an intimate destination wedding, it's unlikely that your boss would be insulted to be left off the guest list. But if you're throwing a rather large affair and work at a small organization, it's polite -- not to mention smart politics -- to invite the head honcho. "A courtesy invitation can't hurt," explains Mac Adam. "And your boss will be happy to have been thought of." Finally, don't worry that it will be seen as a ploy to score a present; most managers, regardless of whether they've been invited, give wedding gifts to their employees who marry.