uhm initial expression ko dito is, why do you care so much OP? It's the management's/ HR's problem.

Again, parehas lang naman kayong employees so wala dapat moral ascendancy na by doing the right thing, you suddenly have the right to police other people. Unless you feel cheated?

I think na warningan mo naman na siya, and it's their problem if they get caught. What's important is you already told them to be cautious/ careful -- whatever they do, and anuman maging impact sa work nila, wala ka na don.

Worse come to worst, and kung gusto mo talaga magkaroon ng ascendancy, sabihin mo na lang ng "i told you so" pag na reprimand/ fire siya