The Commission on the Status of Women was the first UN intergovernmental body to study the responsibility of men in gender equality in depth. This publication explores the possibilities of encouraging men to participate in gender-related activities, in the fields of health, paternity, violence, violence in the workplace, and the need to involve youths. Thus, it is important to emphasize two levels: the cooperation with men concerning their attitudes and personal behaviour and mobilization in relation to political, economic and social structures of male power that perpetuate inequalities.