An employer, a union or an individual can file unfair labor practice charges with the Board’s regional office for the region in which the unfair labor practice has occurred. The charging party must file and serve its charge within six months after the unfair labor practice occurs.
All charges filed with the regional office are investigated to determine whether there’s reasonable cause to believe the NLRA has been violated. The Board and/or its agents may:
If the regional director determines that the charge lacks merit, it will be dismissed unless the charging party decides to withdraw the charge. A dismissal may be appealed to the General Counsel’s office in Washington, D.C.
If the regional director finds reasonable cause to believe a violation of the NLRA was committed, the director will seek a voluntary settlement to remedy the alleged violations.
Despite Cowan's push for more settlement agreements, if these settlement efforts fail, a formal complaint is issued and the case goes to hearing before an NLRB administrative law judge (ALJ). The ALJ issues a written decision, which may be appealed to the NLRB for a final agency determination. That final determination is subject to review in the federal circuit courts of appeals.
Section 8(a) of the NLRA lists the unfair labor practices of employers and section 8(b) lists those of labor organizations. Section 8(e) lists an unfair labor practice that can be committed only by an employer and a labor organization acting together. You can find all references to sections of the NLRA at 29 U.S.C. sections 157-160.
Sometimes, the Board will halt its investigation into unfair labor practice charges and defer the dispute to the parties' grievance and arbitration procedure established by their collective bargaining agreement under certain circumstances. For example, the Board will defer unfair labor practice charge allegations where a party has not initiated a grievance under its collective bargaining agreement where the following conditions exist: (1) the parties have a long standing collective bargaining relationship; (2) the employer will process a grievance concerning the charge's allegations; (3) the employer is willing to process the allegations despite any procedural issues; (4) the contract's arbitration clause covers the dispute before the Board; and (5) the contract and its meaning lie at the center of the dispute.3 Alternatively, the Board will defer allegations when a party has grieved the same issue and grievance proceedings are ongoing while unfair labor practice charge remains pending.4
1. NLRB Advice Memorandum GC 25-05, Rescission of Certain General Counsel Memoranda (Feb. 14, 2025)
2. NLRB Advice Memorandum GC 25-06, Seeking Remedial Relief in Settlement Agreements and Formal Compliance Cases (May 16, 2025
3. Collyer Insulated Wire, 192 NLRB 837 (1971); United Technologies Corp., 268 NLRB 557 (1984)
4. Dubo Mfg. Corp., 142 NLRB 431 (1963)
5. NLRB Advice Memorandum GC 25-10, Guidance for Deferring Unfair Labor Practice Cases (Aug. 7, 2025)