Menstrual cycle The first period usually begins between twelve and fifteen years of age, a point in time known as menarche. They may occasionally start as early as eight, and this onset may still be normal. The average age of the first period is generally later in the developing world and earlier in developed world. The typical length of time between the first day of one period and the first day of the next is 21 to 45 days in young women and 21 to 35 days in adults (an average of 28 days). Menstruation stops occurring after menopause which usually occurs
Menstrual leave 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. Menstrual leave policies exist in some Asian countries, although individual companies in countries that do not have national laws may choose to implement such policies. In Indonesia, under the Labor Act of 1948, 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