In 1975, Icelandic women earned 40% less than men; today it is only 10%. A "Women's Day Off" strike was held in 1975; 90% of women refused to work. It shut down the country. In response Iceland passed a Gender Equality Act & elected a female president.
https://www.vox.com/videos/23842984/iceland-womens-day-off-strike-kvennafri
https://www.vox.com/videos/23842984/iceland-womens-day-off-strike-kvennafri