I'm asking this question for my friend as he is not familiar with forums/discussion panel sites and this takes place in Malaysia.
He works as a graphic designer in a small event company (not more than 10 including boss himself) which will help clients to organize and manage the event. His job scope is to design several artworks related to the events such as logo, flyer, poster, banner, and more. However, due to the lack of manpower in the company, he will also has to be part of the event crew on the event day (either PA or other roles). It may sounds a bit off the job scope for me but it is fine in the perspective of as part of the team member of the company. I'm stating this out just to bring out that he has to attend the event as a crew by leaving his design-tasks aside.
His boss is engaged before my friend was hired. Keep in mind that his fiancée does not have an official position in the company but visits the office daily. As the only graphic designer in the company, my friend needs to handle every design-related tasks for every events by his own which can be seen as very tiring. However the fiancée always assigns him to do other tasks such as design poster for her mother's events and other tasks which the assigned tasks is totally personal. I presume his boss does not care yet because his boss knows about this but so far no actions was taken.
My friend is frustrated in this situation but he has no idea how and who to tell to stop accepting such tasks from his fiancée even though there may no tasks on his hand because his fiancée is not one of the company member and the events she accepting is not under company title.
Is there anyway he can speak out this issue in friendly yet effective way? He still not yet bring up this to his boss because this involves his fiancée and my friend worries that it would sound personal against his boss's fiancée in this case.