This does not mean that the employer should pay more for what the employee actually does. If the employer is not making full use of the employee's talents, the employee has a remedy. He can find an employer who will use and pay for those talents. The employee's value to the employer is determined only by what the employee produces. The number of children the employee has, his education, the number of years of experience, all are irrelevant, unless they affect the employee's productivity.
Some employees are proud of being worth less than they are paid.
They brag about how little they do and how well they are paid. Any employee whose work is worth less than he is paid should be fearful, not proud. If the employer ever figures out that he is paying the employee more than his work is worth, that employee has either a pay cut or unemployment in his future. In recent years this has been the plight of many union members whose unions had negotiated wages that exceeded the value of the employee's work. Some accepted pay cuts.