Good answer - well done.

Richard is Mick's line manager. Greg's comments were unlawful.

In most organisational policies concerning discrimination or harassment, an option available to employees who experience unfair treatment is to ask a manager to intervene.

Try another option.

Mick could have tried to rectify the situation himself by aggressively approaching Greg about the comments, but the way people try to resolve matters themselves can affect the outcome.

In this case, Richard's responsibilities are clear.

This is not the best answer - try another option.

Richard could have referred the matter to higher management or to human resources to deal with but most employers encourage line managers to try and nip problem behaviours in the bud.

This can ensure a speedy outcome to a problem and earn the manager respect for showing leadership.