§ 4208.9 Plan adoption of additional abatement conditions.

(a) General rule. A plan may by amendment, subject to the approval of the PBGC, adopt rules for the reduction or waiver of partial withdrawal liability under conditions other than those specified in § 4208.4, provided that such conditions relate to events occurring or factors existing subsequent to a partial withdrawal year. The request for PBGC approval shall be filed after the amendment is adopted. PBGC approval shall also be required for any subsequent modification of the amendment, other than repeal of the amendment. A plan amendment under this section may not be put into effect until it is approved by the PBGC. An amendment that is approved by the PBGC may apply retroactively.