Gender balance is commonly used in reference to human resources and equal participation of women and men in all areas of work, projects or programmes.
In a scenario of gender equality, women and men are expected to participate proportionally to their share of the population. In many areas, however, women participate less than what would be expected based on the sex distribution in the population (underrepresentation of women), while men participate more than expected (overrepresentation of men).
United Nations Statistics Division – UNSD. Global Gender Statistics Programme.