I bought a giant pair of bolt cutters a while back for a use case other than bolt cutting (shark fishing; cut the big hook instead of putting your hand near the mouth).
I never caught any big sharks like I thought, but now my wife runs a restaurant and occasionally employees just don't show up to work and leave things in their lockers. Once in a while it's clear it's to be annoying (locking supplies in their locker).
Never met a padlock or combination lock I couldn't shear through easily. Totally has paid for itself.
Now, for a similar price, you can buy a hydraulic cutter powered by a hand pump. They also come with replaceable jaws so you dont wreck your cutters when attacking a hard lock.
https://www.amazon.com/Lothee-Hydraulic-Cutting-Portable-Han...
And there are powered models too. The 3-foot snippers are long out of date for thieves.
I remember the faghetbouditt of Kryptonite that broke the blades of that exact hydraulic cutter.
Generally speaking, the hasps on employee locks aren't big enough to hold anything truly sturdy... I doubt even the most resistant lock you could put on a typical locker hasp would hold up to the giant 3 foot bolt cutters.
Oh this is about double what I paid. But good to know!
There's quite a few, many hardened locks will bend or mar bolt cutters... we're not taking bolt cutters off of the rigs because they're relatively small but a K12 and a pair of pliers is way more reliable.