A person's pension is absolutely considered part of the marital asset (at least the part earned during the marriage and not after separation). Keep in mind separation can be a legal separation or if no court order obtained, the time when there wasn't any hope of reconciliation and you were living separate and apart. As to the pension, in equitable distribution states, the amount would be equitably distributed based on an accounting of all the marital assets and debts and who contributed what and how long the marriage lasted. Keep in mind, this is quite different from a community property state, wherein the amount is usually half (based on calculating what amount was community property).