You should tell your employer when someone is unreliable.
Josh's coworker Tony takes breaks that are way longer than they're supposed to be.
Josh wants to tell someone about this.
Josh decides to tell his boss that Tony is taking too long on break.
Josh decides to tell his wife about it when he gets home from work.
Tony is disciplined and Josh no longer has to do more than his fair share.
Tony continues to take long breaks, increasing the workload on Josh.