[michaelochurch]

How are employment contracts for 6-figure jobs "under duress"?

Those non-standard terms (non-disparagement, arbitration only) are almost always presented after the person has gone through the interview process, accepted an offer, and given notice at the previous employer. If the companies put those policies on their websites for the public to find, then it wouldn't be under duress. Companies with onerous employment terms would be known to have them before people spent time on an interview.