Consider the sexual harassment which continually occurs between a secretary and a boss . . . while objectionable to many women, [it] is not a coercive action. It is rather part of a package deal in which the secretary agrees to all aspects of the job when she agrees to accept the job, and especially when she agrees to keep the job. The office is, after all, private property. The secretary does not have to remain if the 'coercion' is objectionable.