It almost seems like something out of a comedy skit - a Norwegian boss has ordered all his female employees to wear red bracelets while they are on their period.
According to the company, the red bracelets are to let their boss know why they are using the toilets so often. That must be it... I'm sure they aren't doing it to know who may be a little crankier than normal so as to avoid them until their red bracelets are off.
File that under fear the red scarfs.