In my oh-so-humble opinion, 12 hr 4 on 4 off is vastly preferable
to me, having tried the 6 on 3 off rosta. We adopted the Lufthansa style-rosta for about a year (Up until last years round of redundancies) and, apart from the drop in shift pay, I just seemed to be constantly at work. 2E 2L and 2N, 1 rest day 2 off and then back again. Not much scope for o/t, unless you really wanted to spend every minute at Donington Hall (Nice though it is..!!)
12hr shift pay is the big plus for us again and of course the other bonus is that you only have to take 4 days leave to get 12 days off !
Ok, some may balk at the thought of spending 12 hrs at work, but the pros outweigh the cons for me !
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Now 12 hrs on the slot desk ????.....I'll reserve judgement on that, thank you Bob !