Men don't have a regular problem

These union women want menstrual leave:

Unions say they are negotiating a landmark industrial relations claim to allow women to take extra sick leave for menstrual pain.

The Australian Manufacturing Workers Union (AMWU) says some women have particularly bad periods and are genuinely forced to call in sick.

As part of negotiations for a new enterprise bargaining agreement at Toyota, the union has asked for women to be allowed 12 paid days menstrual leave a year. ...

"We believe that they shouldn't be disadvantaged against men that don't have a regular problem once a month."

I think that the women should be happy that they are paid the same as men.