I work for a small team and one of my colleagues has mental health issues and is off fairly frequently..the past 3 times they have been off it has proceeded a planned holiday to somewhere nice. We have a new boss and I dont think they are aware of the pattern. They are suggesting that we take on more of the colleagues work on a more permanent basis until they are more stable. Is it unreasonable that I am pissed of with this and would you say something to your boss?