Menstrual leave  Menstrual leave is a type of leave where a woman may have the option to take paid or unpaid leave from her employment if she is menstruating and is unable to go to work because of this. According to a study, out of the 40% of women who are part of the labor force 20% experience a condition called dysmenorrhea that causes pain during menstruation. Menstrual leave is controversial because it is seen by some as a criticism of women's work efficiency or as sexism. Meanwhile, those who support menstrual leave policies compare its function to that of maternity leave and view it as a promoter of gender equality. A girls' school in the south Indian state of Kerala had granted its students menstrual leave as early as 1912. The concept of menstrual leave started in Japan in the early 20th century. In the 1920s, Japanese labor unions started to demand leave (seiri kyuka) for their female workers. In 1947, a law was brought into force by the Japanese Labor Standards that allowed menstruating women to take days off work. Then a unique legislation of its kind, it is now found in a few countries. Debate continues as to whether it is a medical necessity or a discriminatory measure. Nike also included menstrual leave in their Code of Conduct in 2007, implemented around the globe wherever they operate. Nike obliges the business partners to follow the code principles by signing a Memorandum of Understanding. Australian Manufacturing Workers Union (AMWU) started a campaign for menstrual leave for female employees at Toyota. The union asked for 12 paid days of menstrual leave for a woman per year. Coexist, a Bristol community interest firm, introduced a "period policy" in order to give women more flexibility and a healthier work environment. Hoping to break down the menstruation taboo, Coexist became the first company in the United Kingdom to implement this policy. Menstrual leave policies exist in some countries, although individual companies in countries that do not have national laws may choose to implement such policies. In Indonesia, under the Labor Act No. 13 in 2003, women have a right to two days of menstrual leave per month. In Japan, Article 68 of the Labour Standards Law states "When a woman for whom work during menstrual periods would be specially difficult has requested leave, the employer shall not employ such woman on days of the menstrual period." While Japanese law requires that a woman going through especially difficult menstruation be allowed to take leave, it does not require companies to provide paid leave or extra pay for women who choose to work during menstruation.