Seldom will your attitude and deeds in your personal life have any effect on your professional one. You can be the worst friend, the worst family member, and the worst roommate, and—barring any sort of criminal convictions, massive scandals, or anything personal affecting your performance at work—no one is going to fire you for it. While this may be the case, how you conduct yourself matters; call it Karma, if you will, but sooner or later, your actions are going to have consequences down the line.
This unique situation led to very immediate consequences for this terrible roommate. While on a work assignment in a foreign country, this woman was given a room living with another worker. His lack of tidiness, general hygiene, and complete lack of regard for others made him a nightmare to live with. Soon, she grew sick of his behavior and reported it to his boss, who happily used it as an excuse to fire him.