29 CFR 458.54: Complaints alleging violations of § 458.2, Bill of rights of members of labor organization, or § 458.37, prohibition of certain discipline.

Any member of a labor organization whose rights under the provisions of § 458.2 or § 458.37 are alleged to have been infringed or violated, may file a complaint in accordance with § 458.53: Provided, however, That such member may be required to exhaust reasonable hearing procedures (but not to exceed a 4-month lapse of time) within such organization.