In protest against wage discrepancy and unfair employment practices, 90 percent of Iceland's female population went on strike for a day.

The gender pay gap or gender wage gap is the average difference between the remuneration for men and women who are employed. Women are generally found to be paid less than men. There are two distinct measurements of the pay gap: non-adjusted versus adjusted pay gap. The latter typically takes into account differences in hours worked, occupations chosen, education and job experience. In other words, the adjusted values represent how much women and men make for the same work, while the non-adjusted values represent how much the average man and woman make in total. In the United States, for example, the non-adjusted average woman's annual salary is 79–83% of the average man's salary, compared to 95–99% for the adjusted average salary. The reasons for the gap link to legal, social and economic factors. These include having children, parental leave, gender discrimination and gender norms. Additionally, the consequences of the gender pay gap surpass individual grievances, leading to reduced economic output, lower pensions for women, and fewer learning opportunities.

On 24 October 1975, Icelandic women went on strike for the day to "demonstrate the indispensable work of women for Iceland's economy and society" and to "protest wage discrepancy and unfair employment practices". It was publicized domestically as Women's Day Off. Participants, led by women's organizations, did not go to their paid jobs and did not do any housework or child-rearing for the whole day. Ninety percent of Iceland's female population participated in the strike. Iceland's parliament passed a law guaranteeing equal rights to women and men the following year.