For reasons not relevant here, I was called upon to open a bulletin-board lock with a complete lack of keys:

It’s obviously not the highest security lock you’ve ever seen. Armed with a small screwdriver and an old darning needle, this took the better part of 30 seconds:

Actually, I devoted a few minutes to verify none of my collection of random keys would suffice.
Replacing the lock not being within my remit, I improvised a simple retainer from available materials:

Yes, the nylon cable tie will surely pull out of the latch:

And I admit the installation’s security has taken a definite downward step:

Some day, I’ll tote a wrench to the site, remove the lock, and improve the improvisation.
Replacing the lock seems mired in an intractable budgetary wrangle. Similar locks being five bucks on Amazon, I’m tempted to just make it happen, but doing so would apparently roil the decision-making stratum. I’m perfectly happy to remain an on-call techie devoid of political ambition.