Such evidence shall show:
A timely return by a most recent employing unit or other person of a notice of claim filed with a statement merely questioning the claimant's eligibility under the provisions of M.G.L. c. 151A, § 24(b) shall nevertheless bar such employing unit or other person from being a party to further proceedings relating to the allowance of the claim unless such statement so furnished is supported by factual information.
All such returns by an employing unit shall be verified by a written declaration that they are made under the pains and penalties of perjury.
In no event shall good cause be considered if the successor fails to give such notice within 180 days of the date of transfer.
430 CMR, § 5.02