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NLRB Fax Number — File Unfair Labor Practice Charges

The National Labor Relations Board takes unfair labor practice charges, representation petitions, and related filings by fax, but through its regional offices rather than a single national line. Each NLRB region covers a defined geographic area, and you file where the alleged violation took place. People commonly fax completed charge forms, election petitions, objections to elections, and supporting evidence to the region handling their dispute.

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National Labor Relations Board Fax Number

Contact your regional NLRB office for their fax number

Hours: NLRB regional offices: Monday-Friday, 8:30 AM - 5:00 PM local time.

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What You Can Fax to National Labor Relations Board

  • Unfair labor practice charges
  • Representation election petitions
  • Objections to elections
  • Compliance documents
  • FOIA requests
Tip: File with the NLRB regional office that covers the location of the alleged violation, since that's where jurisdiction sits. Name the employer, the union if one is involved, and the specific conduct you're alleging so the regional staff can open or attach the matter correctly. Keep a delivery confirmation, because charge-filing deadlines under the Act are strict and proof of timely submission matters.

Faxing to National Labor Relations Board — FAQ

No. The NLRB works through regional offices, and each region keeps its own fax number. Find the region covering where the alleged violation occurred at NLRB.gov and use that office's line.

Yes. Fax the completed charge form along with supporting evidence to the regional office covering the location of the violation. A delivery confirmation gives you a record of when the charge was submitted, which matters given filing deadlines.

Send the petition to the appropriate NLRB regional office with evidence of employee support. Authorization cards are typically needed showing interest from at least 30 percent of the proposed bargaining unit.

Jurisdiction follows where the alleged labor practice happened, not where you live or where the union is based. Use the regional office locator on NLRB.gov to find the correct office and its fax number.

Yes. A 7-day free trial lets you send a charge form or election petition to your regional office before committing, with no card required to start. Paid plans begin at $12.99/month; if a large evidence packet pushes you past your monthly page allowance, you upgrade to a higher plan instead of paying per page. Choosing your fax number is free.

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