Firstly I would sort out the crew who take the p....sickness , restricted rostas,compassionates over Xmas,dependent days,.
I have long been of the opinion that if you go sick for or report conveniently slightly late for (in SH) a trip (and it can be demonstrated to be pattern sickness/unpopular trip/etc), that your forward roster should be wiped and you should be re-rostered the same trip next. Go sick for that and be re-rostered it twice. Fail to turn up then and you're out (three strikes etc).
Now, can anyone explain how Lalalady has managed to be off sick for 12 months without any apparent sanction, and now miraculessly is fit for work again, just when it appears BA are after her and 5/6 other BASSA reps on a disciplinary?