Sometimes people reframe mistakes or lapses in a "dishonest" way to save face. I think it's important to use those occurrences as opportunities to show that it's safe to be honest instead. Allow them to come clean and show that the highest priority is correcting the problem. Running straight to HR instead of creating a teaching moment could increase distrust and the incentive to be dishonest.
There is a line between this and manipulative dishonesty, of course. Bad faith (when it's clearly that beyond reasonable doubt) should be treated with close to zero tolerance.
There is a line between this and manipulative dishonesty, of course. Bad faith (when it's clearly that beyond reasonable doubt) should be treated with close to zero tolerance.