You know, I ain't sure. The bribe money didn't come from his pension fund, so he didn't defraud his pension plan. But he did violate the ethics set by his employers. It may depend on the fine print and I'm sure some lawyer will make the connection if there is one.
Wasn't there a court-ordered seizure of his assets after the conviction? It could be that pension is considered an asset as well.
Sad...but true. That's why some groups have been and will remain uneducated and living in poverty. Nothing will change their voting habits and the party who has them in their back pocket knows it!
It gets complicated. His wife is entitled to half of his pension benefits. Some of it may be considered her assets.
Pensions are usually payments from an annuity which are classified a Life Insurance Product which the proceeds are free from creditors.