has constitutes that alienation of labor frist that the work is external to the worker that it is not part of his nature and that consequently he does not fulfill himself in his work but denies himself. his work voluntary but imposed forced labor it is not the saticfaction of a need but only a means for satisfying other needs its alien character is clearly shown by the fact that as soon as there is no physical or other compulsion it is avoided like the plague external labor, labor in which man alienates himself is a labor of self-sacrifice. finally,the external character of work for the worker is shown by the fact that it is not his own work but work for someone else that in work he does not belong to himself but to another person