Pulling sick days
The scum pulling sick days does no harm to the company. They just give the rest of us reserve and O days. So the rest of us get the !!!!s with crap rosters and disrupts working for the scum.
Still, I wont drop him in. In time the company will sort him out.
You could grow a pair and confront the scum. Tell him he is only dicking his work mates around. Perhaps he would like to start working on his reserve and O days.