In 99% of the cases the candidate has exactly 0 leverage to negotiate this and the person on the other end will be laugh at this notion.

Instead of weird fantasies about power that doesn’t exist, how about we acknowledge the skewed relationship between a(n) (prospective) employee and an employer like the rest of the civilized world and do away with “fire at will”.

If something like this happens in the EU, then it’s likely the company would at least be on the hook to pay the salary for the duration of the initial contract that was signed (often 6 month minimum). I say likely, because of minor variations between countries, but it’s a given in most countries.