Phileas
Mobster lover is questioning the legality of such duties.
I have made it quite clear that although it may be legal it is not reasonable in my view as it implies roster instability which in fact raises the question of the whole roster's legality.
If I have a chip on my shoulder it is there from hard experience in exactly this area. Roster guys 900 hrs a year but don't take the p*ss at the same time.