Buy a nice breaker bar and cheap ratchets. The breaker bar won't break and the cheap ratchets won't grow legs. It is more work, but using something like ShadowFoam in a lockable chest of tools allows you to quickly determine that all tools are had before locking them away.
$22.60
https://www.toolsdelivered.com/williams-b-52eha-3.8-inch-drive-8-inch-enclosed-head-ratchet
I dare anybody to find a better ratchet for the money anywhere.
I run a smaller cattle farm for myself with older equipment. I know exactly what you mean about tools missing and I dont have employees.
I would suggest kaizen foam for the employees box and hold them accountable for tools. Or give them their own small box and say they are responsible for replacement of lost.... Knowing damn good and well they won't replace it.
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Support domestic manufacturing when possible. Your neighbors need your help now more than ever. Keep our people working!
Having a tool box with foam cutouts for the tools makes spotting what is missing very easy. Keeping employees accountable for tools is another deterrent. Have a job box in the maintenance shed and a sign out sheet for tool kits. Someone has to manage the keys and hand out what comes/goes, but that will help keep people accountable. If tools come back missing, you have a paper trail and can charge back what replacements cost.
Something else to consider is a battery powered impact wrench. Those can make quick work of stubborn fasteners.
If you have rusted bolts you need the blue wrench and a block of Gulf Wax (then later anti-seize).....don't beat up hand tools trying to remove them.
Anti-seize, I put that sh** on everything.