29 C.F.R. § 458.37 Prohibition of certain discipline.
Title 29 - Labor
No labor organization or any officer, agent, shop steward, or other representative or any employee thereof shall fine, suspend, expel, or otherwise discipline any of its members for exercising any right to which he is entitled under the provisions of the CSRA or FSA or this subchapter.
Title 29: Labor
PART 458—STANDARDS OF CONDUCT
Subpart A—Substantive Requirements Concerning Standards of Conduct
Additional Provisions Applicable
§ 458.37 Prohibition of certain discipline.

