This is a reasonably hot topic where I work as well. I am employed in a flying post which requires me to meet a 15 mins to airborne time from 0800 to 2200 followed immediately by a 45 mins to airborne from 2200 to 0800. It is a 24 hour duty with a hand over, crew to crew, at 0930. The job involves flying regularly in abysmal weather, on reactive tasking, quite often with other peoples lives depending upon you showing up. Obviously you cannot sleep during the 15 mins readiness period and it is not uncommon to be tasked late in the evening and then operate literally all night.
Each duty day is followed by a standby duty with a call-out to airborne requirement of 60 mins. Duties are regularly done in blocks of 3, day in, day call, day in, day call, day in, day call. This is usually followed by a few days off. Fatigue was a real issue before the Selby incident. People are now thinking very hard about the implications of the verdict and the judges comments.
At a medical a couple of years ago the Doc expressed horror at my working routine. However, he didn't explain where the extra crews (money) would be found to cover if it was changed. From the comments above an awful lot of people are in a very similar boat. Luckily I live within 30 mins of my base and in a reasonably remote area, so the number of people exposed to my driving after a shift is relatively small. I have to get home to sleep somehow and public transport is not an option. Does that excuse me if I have an accident, probably not, but what else can I, or the thousands of other people who have similar working routines, do about it.