Some people prefer earlies and some prefer lates. Personally I could quite happily cope with 5 lates over 5 earlies. I fail to see why personal preferences can not be taken into account on this issue. I should think the proposed system will allow the company to start the first early well before 0600L following days off and finish on a late at midnight using 'exemptions'. If this is the case then it isn't really 4 off at all. I hope to be proven wrong!