I expect most of us assume that flying on a scheduled airline is bound up in sufficient rules and regulations that the flight is "safe"
True to a certain degree, but Flaperon's comment on the flight time directive shows that the rules are not consistent. The UK has a different set of rules governing the duty hours of pilots compared to the rest of Europe.
The Flight Time directive is trying to harmonise those rules (as I understand it) i.e. increase the UK regulation to fall in line with the European one (and of course being an Irish registered airline means you're flight time hours are governed by the EU legislation rather than the UK).
Bottom line is that the move to EU rules will increase the hours pilots have to fly, in some instances potentially very dangerously. There are already studies coming out of the US that show how pilots are 'winking' out during flights due to fatigue.
OK so the UK schedules now in some airlines at least, means that pilots can have a relatively easy life (Mrs GeeTee for instances typically does a 30 hour week) but heck, I'd rather have fresh, under worked pilots than tired and over worked ones any day of the week!