The Board may accept a direct trustee-to-trustee transfer from a deferred compensation plan under Internal Revenue Code § 457(b) or a tax-sheltered annuity under Internal Revenue Code Section 403(b) for the purchase of permissive service credit, as defined in Internal Revenue Code Section 415(n)(3)(A), or a repayment to which Internal Revenue Code Section 415 does not apply by reason of Internal Revenue Code Section 415(k)(3). Such transfers will be allowed to the extent permitted by law, subject to any conditions, proofs, or acceptance the Board or its designee deems appropriate.
807 CMR, § 12.03