This would be incredibly hostile to small businesses. Now you need to waste even more money on lawyers and tons of time navigating useless government bureaucracy. Big companies will be able to comply with any regulation thrown their way, but I don't think you can say the same about smaller shops. Your solution is penalizing good actors as well.
I can just imagine it now: Oh, we want to hire you but it looks like the next available turn for contract reviews is 1 month from now. Sorry, looks like you'll have to sit around without making any money in the meantime.
A judge's time is generally quite expensive, and handling the massive load of contracts would likely require appointing a lot more judges.
What if both parties are fine with a contract? Why should they be forced to get the government involved? And if both parties decide to re-negotiate a contract, do we need to go through the whole government approval process again?
I agree that there are issues with some employment contracts, but you are making some incredibly broad generalizations focused on a few bad actors without taking into consideration the broader consequences.