I hope my speculation in my earlier email is correct, but you should wait to get confirmation of exactly how the levy will be determined.
I tried to find out a bit more about the levy and all I can determine is that civil servants will be required to pay 10% of salary in excess of €12,500. I can't see anything specific about local authority workers or other integrated public sector employees.
If I'm right in my guesstimate and there's an offset of twice the State pension, someone earning €38,000 per annum would end up paying 10% of (€38,000 - 2 * €11,975.60 - €12,500) = €154.88 per annum, or just under €3 per week.
However, if the offset is only 1.5 times the State pension, someone earning €38,000 per annum would end up paying 10% of (€38,000 - 1.5 * €11,975.60 - €12,500) = €753.66 per annum, which is around €14.50 per week.
So there's a big difference depending on the approach taken and I haven't seen anything yet that confirms that the levy will take account of whether or not you are paying a full stamp.
Homer