Life is full of opportunities to make personal sacrifices on behalf others, and we often rise to the occasion. We do favors for co-workers and friends, give money to charity, donate blood, and engage in a host of other cooperative endeavors. Sometimes, these nice deeds are reciprocated (like when we help out a friend, and she helps us with something in return). Other times, however, we pay a cost and get little in return (like when we give money to a homeless person whom we’ll never encounter again).

Although you might not realize it, nowhere is the importance of cooperation more apparent than in the workplace. If your boss is watching you, you’d probably be wise to be a team player and cooperate with your co-workers, since doing so will enhance your reputation and might even get you a promotion down the road. In other instances, though, you might get no recognition from, say, helping out a fellow employee who needs assistance meeting a deadline, or who calls out sick.