[s1artibartfast]

All anti-BDS that I am aware of operate through government employment and contracting.

I would however clarify your statement in that the scope often extends not just to the work under contract, but personal and professional behavior outside the scope of contract.

[JohnFen]

Yes, but it's still under the authority of the contract. That means that expressing support of a boycott is not illegal, it's just grounds for termination of that employment.

[s1artibartfast]

That is correct.