that is called a made up rule i.e it was concocted on the spot as a cop out, bear in mind the government at the time knew full well the country was in the mire but old habits die hard, viz well we wont be in power much longer but lets make sure we get as good a deal as possible. The pension rule that should have been applied was that that was contained in their contractual terms before 2009.
It is for behaviour such as this that all our TD'S would fight tooth and nail to prevent fiscal unity as they could no longer pull strokes such as this.
The reduction on higher pensions announced today by the current group, I refuse to call them a government they are not worthy, is no doubt because of pressure from the IMF and the 20% is only a start. Just imagine a german reading of those pensions and then being asked to bail us out!!
thanks for link