Expectation Management
You have to give it to CX, they're experts at dirty mindf*cking.
Step 1: fabricate and spread a rumor about the 13th Month not being paid.
Step 2: Do not say anything to let the nervousness and concern simmer a bit.
Step 3: Pay the 13th Month.
Step 4: Watch as a relieved group of employees has subtly but suddenly accepted the fact that the 13th Month card can and will be used against them when needed.
If only they applied as much astuteness in running the business as they did trying to screw their employees, they'd be making billions instead of losing them on stupid bets.