at my work, its once a week. Find out where that requirement is coming from. Remember, try to be polite but insistent. Also, have your wife get a blood test for antibodies, see if she has natural immunity.

If she does, you can try arguing (by email) that this requirement is unreasonable.

Again, be meticulous and polite. Have a mindset of 'I want to be reasonable and do my due diligence because this might end up in court'

Courts in civil disputes, take note when a party has obviously made good faith effort at conflict resolution before resorting to lawsuits.