It is a growing trend for more retirees to continue to work to some extent. Some people choose to take a part-time job in retirement because they enjoy the social interaction and like to feel that they are still contributing. Others may feel a financial need. A part-time job that you enjoy while earning some extra income can be a very attractive way to spend some of your retirement time. One factor that needs to be considered however, is how the additional income may affect your Old Age Security benefits.