NLRB Form 502 (AC) - Amendment of Certification Petition

Entity Mandating Poster: National Labor Relations Board

Applicability: An employer, labor organization or a group of employees seeking an amendment of a previous NLRB certification.

Filing Specifications: The petition must be filed by using E-File at or by submitting an original of the petition to the NLRB office in the region in which the employer concerned is located.

Obtaining This Form: This form may be downloaded directly from the National Labor Relations Board website.

Additional Resources

National Labor Relations Board