Very difficult in IT operator unless dedicated LH, which is hard to get as we are a MFF fleet. Random roster. Standby a particular problem, usually spent in a motorway service station halfway to the airport! We have a particularly flexible leave system which can be used to mitigate. Rostering utterly uninterested in helping out with block of work/DOFF.
One particular guy I work with, who moved bases after getting command and now commutes about 200 miles is without doubt slowly killing himself. Very un-family friendly.