A co-worker on your is not doing his/her job effectively. Should the rest of the team pick up the slack for the benefit of everyone or let the co-worker fail so the boss sees his/her ineffectiveness?
My supervisors have a star system. The ones that don't work get away with it on a regular basis. Nothing we can do about it. There's so much nepotism where I work it's pathetic.
I said cover up, but only if it's a temporary thing perhaps due to circumstance. If they are capable and can actually do the job and it's not a simple question of them being lazy.
Unfortunately this has been going on for a while with my co-worker.