in crude terms...

we can't force the migrant workers to put a needle in their arm. it's their body; they maintain sovereignty over it. like, period. that's sec 7 in it's most assertive form, and the form i will generally interpret it.

but, we can tell them that if they don't want to get tested then they're not allowed to work and they have to go home. sort of. that's still likely to be deemed unconstitutional, but because it's a lesser breach, and in the name of public safety, it's likely to be allowed.