Even in the absence of formal policies, an employee can be fired or at least receive a black mark on his record when management learns of his inappropriate conduct and waste of company time. When pornography is shown to employees of the opposite sex, there can be claims of sexual harassment that can result in big-time legal problems. Any complaints by fellow employees can bring loss of respect and dash any hopes of advancement. Pursuing anything personal on company time is being unproductive, and pursuing something like pornography is easily counterproductive. Focus and concentration on one's tasks become increasingly difficult.
Job performance can easily deteriorate.
To repeatedly view pornography on the job usually requires deception. Often there are more and more excuses and lies as to why tasks were neglected or deadlines were not met. And the deceptiveness, guilt and fear of discovery are emotionally depressing and unhealthy. Sex addictions and unhealthy lifestyles, even when not pursued on company time, can easily carry over and hurt job performance. Marriages and other relationships are often damaged or destroyed, which further hurts job performance.