Sorry but I cannot agree with the "It's legal so we can force you to do it or starve" response. Forcing a woman to go into sexual service or loose the social assistance that allows her to eat and pay the rent is nothing more that official and state-sanctioned rape.
I'm sure they have an exception for a muslim citizen who will not accept being forced to work in a pork slaughterhouse... Or a Jew who is told he must accept a secretarial position for the German National Democratic Party (who espouse anti-semetic laws and positions)
Forcing a woman to submit to sexual action under duress and threats can only be called one thing.
RAPE
End of subject.
And if it's national policy....
....well we hanged the last group of German Leaders who enacted laws that violated Human Rights.