yea i concur for the 8-hr shift, you have to work 7 days before you can get 2 pathetic off/rest days. you work 19 out of 28 days. those who have done the shift tell me however that 8-hr passes very quickly. it's like before you can get much work done, then it's going home time.

for 12-hr shift, you work 14 out of 28 days. but i find that you tend to get quite hungry towards the end of the shift and the work day seems to be never ending. but at least, 2 weekends off as compared to 1 weekend off a month for 8hr shift.

another difference is that for 8hr shift, usually companies will provide point to point transport due to the working hours since there may not be public transport anymore i.e. afternoon going home, night shift going to work.

for those companies that work 12hr shift, they may only provide pickup from nearby MRT stations, since there will be public transport at 8am/8pm.