This article introduces the special section on sexual harassment at work. It discusses the importance of sexual harassment as a continuing, chronic occupational health psychology problem to which the public health and preventive medicine notions of prevention may be applied. The article discusses the dilemmas in conducting and reviewing research on harassment, briefly examining some alternative methods of inquiry. The three articles in this section are introduced and the contrasting legal views of the problems in Europe and the United States are addressed. The preventive management of sexual harassment is suggested.