Is Holiday Premium Pay a ‘Right’?

I’m a FWS supervisor. Management recently announced that each supervisor now will work only 4 out of ten holidays each year, and will be excused from work on the six holidays they are not scheduled to work. In the past, we get paid if we work or not, and, as a result, were paid holiday premium pay for the time worked on each holiday. Do we have rights in this situation?

Determining ‘Net Annuity’ and Payments to an Ex

I have contacted some HR folks and have gotten different answers as to how “net annuity” is calculated for what I and my ex have to respectively pay each other when we retire. Are you able to give an authoritative answer that is based on some OPM reference that makes determining net annuity crystal clear?