Private Pension Reform Act of 1983

Private Pension Reform Act of 1983 - Amends the Employee Retirement Income Security Act of 1974 (ERISA) and the Internal Revenue Code to require that a retirement plan that provides an annuity to a participant with at least ten years of creditable service shall provide a survivor's annuity for the spouse of any such participant who dies before the annuity starting date in an amount not less than the amount that would have been provided if the participant had survived and retired on such annuity date. Provides that a participant's election not to take a joint and survivor's annuity shall not be effective unless the spouse of the participant consents in writing to such an election. Requires a retirement plan to treat an individual who was the spouse of the participant on the annuity starting date and who survives the participant as if such individual were the spouse of the participant on the date of death of the participant whether or not divorced after the annuity starting date.

Allows the assignment of the benefits of a qualified retirement plan in the case of a judgment decree or order relating to child support, alimony payments, or marital property rights pursuant to a State domestic relations law.

Amends ERISA to lower the age limitation for participation in a qualified retirement plan from age 25 to age 21.

Amends ERISA and the Internal Revenue Code to provide for accruals of creditable service to continue while an individual is on approved maternity or paternity leave at the rate of 20 hours service for each week of approved leave.