What is your proposed time limit (when someone has to be hired to fill the position) and "cooldown period" (when hiring can re-open after someone does not meet expectations in practice)?
Bull-fucking-shit
Companies claim all the time that "if you give us a 10 year abatement we will bring X jobs to the area"
Well, time to quantify that, asshole.
We pay for it. And if you can't, I want C level blood. Id be OK with 100% of all taxes, with a 30% yearly interest, payable, to prevent jailing of the whole C level board.