Fucking taliban.
I hadn’t heard of the term Awrah before and googled a little. Guess it depends on whom you ask:
https://www.islamweb.net/en/fatwa/263791/womans-voice-is-not-awrah-but-she-has-to-speak-modestly
https://aboutislam.net/counseling/ask-the-scholar/women-issues/is-womens-voice-considered-an-awrah/
It’s still unfathomable to me that this is even a question that needs to be considered… But then again I don’t deal well with religion in general.
Enforcing their religious views on employees, even if they turn out to have that right, is so morally wrong.