29 CFR 403.8 - Dissemination and verification of reports.
(a) Every labor organization required to submit a report under section 201(b) of the Act and under this part shall make available to all its members the information required to be contained in such reports, and every such labor organization and its officers shall be under a duty to permit such member for just cause to examine any books, records, and accounts necessary to verify such report.
(1) If a labor organization is required to file a report under this part using the Form LM-2 and indicates that it has failed or refused to disclose information required by the Form concerning any disbursement, or receipt not otherwise reported on Statement B, to an individual or entity in the amount of $5,000 or more, or any two or more disbursements, or receipts not otherwise reported on Statement B, to an individual or entity that, in the aggregate, amount to $5,000 or more, because disclosure of such information may be adverse to the organization's legitimate interests, then the failure or refusal to disclose the information shall be deemed “just cause” for purposes of paragraph (a) of this section.
(2) Disclosure may be adverse to a labor organization's legitimate interests under this paragraph if disclosure would reveal confidential information concerning the organization's organizing or negotiating strategy or individuals paid by the labor organization to work in a non-union facility in order to assist the labor organization in organizing employees, provided that such individuals are not employees of the labor organization who receive more than $10,000 in the aggregate in the reporting year from the union.
(3) This provision does not apply to disclosure that is otherwise prohibited by law or that would endanger the health or safety of an individual.
(c) In all other cases, a union member has the burden of establishing “just cause” for purposes of paragraph (a) of this section.