Unfair Labor Practice

An action by an employer or labor union that violates employees' rights under labor relations law, such as interfering with union organizing, retaliating against union supporters, refusing to bargain in good faith, or coercing employees regarding their union choices.

What Is an Unfair Labor Practice?

Key Takeaways

  • An unfair labor practice (ULP) is any action by an employer or union that violates the rights guaranteed to employees under the National Labor Relations Act (NLRA) in the US, or equivalent labor legislation in other countries.
  • Employer ULPs include interfering with union organizing, discriminating against union supporters, refusing to bargain in good faith, and retaliating against employees who file charges or testify in NLRB proceedings.
  • Union ULPs include coercing employees to join or support the union, causing an employer to discriminate against a non-union worker, and refusing to bargain in good faith.
  • The NLRB received over 21,000 ULP charges in fiscal year 2023, with 91% filed against employers, reflecting the significant power imbalance in most workplace organizing situations.
  • Remedies for ULPs include cease-and-desist orders, back pay, reinstatement of terminated employees, and requirements to post notices informing employees of their rights.

An unfair labor practice is the legal system's way of saying: you broke the rules of fair play in labor relations. The NLRA gives workers three fundamental rights: the right to organize, the right to bargain collectively, and the right to engage in concerted activities for mutual aid and protection. When an employer or a union violates any of these rights, that's a ULP. The concept exists because the bargaining relationship between employers and workers is inherently unequal. Employers control jobs, paychecks, promotions, and schedules. Without legal constraints, an employer could simply fire anyone who mentions a union, refuse to negotiate with elected representatives, or make working conditions so miserable that organizing becomes impossible. ULP laws prevent this. They create rules of engagement. The employer can argue against unionization. The employer can't threaten, surveil, interrogate, or retaliate against workers who support it. The union can recruit and organize. The union can't threaten or coerce workers into joining. Both sides must bargain honestly once a union is recognized. Filing a ULP charge is free, doesn't require a lawyer, and can be done by any person, not just an employee or union official. The NLRB investigates, and if it finds merit, issues a complaint that can go to an administrative law judge.

21,678Unfair labor practice charges filed with the NLRB in fiscal year 2023, a 10% increase over 2022 (NLRB)
91%Of ULP charges filed against employers (rather than unions) in 2023 (NLRB Annual Report)
$32M+Back pay and damages awarded by the NLRB in unfair labor practice cases in FY 2023 (NLRB)
48%Of union organizing campaigns where at least one ULP charge was filed against the employer (EPI, 2023)

Employer Unfair Labor Practices (Section 8(a))

Section 8(a) of the NLRA defines five categories of employer ULPs. These are the most common labor law violations in the United States.

SectionViolationExamples
8(a)(1)Interfering with, restraining, or coercing employees in exercising their rightsThreatening plant closure if workers unionize; surveilling union meetings; interrogating employees about union sympathies; creating the impression of surveillance
8(a)(2)Dominating or interfering with a labor organizationCreating a company-run 'employee committee' that mimics a union; funding or controlling a union; recognizing a favored union without employee support
8(a)(3)Discriminating against employees for union activityFiring a union organizer; denying promotion to a union supporter; giving less favorable shifts to workers who signed union cards
8(a)(4)Retaliating against employees who file charges or testify at NLRB proceedingsTerminating a worker who testified at an NLRB hearing; demoting someone who filed a ULP charge
8(a)(5)Refusing to bargain in good faith with the employees' certified representativeMaking unilateral changes to wages without bargaining; refusing to provide requested information; engaging in surface bargaining (going through motions without intent to agree)

Union Unfair Labor Practices (Section 8(b))

Unions are also bound by ULP rules. While less common than employer violations, union ULPs carry real consequences.

Restraining or coercing employees (Section 8(b)(1))

A union can't coerce employees into joining or supporting it. Threatening workers who don't sign authorization cards, using physical intimidation on picket lines, or telling workers they'll lose their jobs if they don't join the union are all ULPs. The line between vigorous persuasion and coercion can be blurry, but threats and physical conduct are clearly over it.

Causing employer discrimination (Section 8(b)(2))

A union can't pressure an employer to fire, demote, or discriminate against an employee because of their union activities or lack thereof. If a union demands that an employer fire a worker for not paying union dues (outside of a valid union security agreement), that's a ULP. This section protects workers from being squeezed by both the employer and the union simultaneously.

Refusing to bargain in good faith (Section 8(b)(3))

Just as employers must bargain in good faith, unions must too. A union that refuses to meet, sends unprepared representatives, makes demands it knows the employer can never meet just to provoke a strike, or insists on permissive (non-mandatory) subjects as conditions for agreement commits a ULP. Good faith requires genuine engagement from both sides.

Secondary boycotts and hot cargo agreements (Sections 8(b)(4) and 8(e))

A union can't pressure a neutral third party to stop doing business with the primary employer involved in the dispute. If Union A has a dispute with Company X, Union A can't picket Company Y's premises to pressure Company Y into dropping Company X as a supplier. Nor can the union enter into 'hot cargo' agreements where the employer agrees not to handle goods from a non-union company. These provisions protect businesses from being dragged into disputes they aren't party to.

The TIPS and FOE Framework

Employment lawyers use two acronyms to help managers understand what they can and can't say during union organizing campaigns.

TIPS: what employers can't do

Threaten: Don't threaten to close, relocate, cut pay, reduce benefits, or take any other negative action if employees vote for a union. Interrogate: Don't ask employees about their union sympathies, how they plan to vote, who signed authorization cards, or who attended union meetings. Promise: Don't promise raises, promotions, better conditions, or any other benefit in exchange for opposing the union. Spy: Don't surveil union meetings, monitor union social media activity, photograph picket lines, or create the impression that you're watching union activities.

FOE: what employers can do

Facts: Share factual information about what unionization means, including union dues, strike risks, and the history of the union. Employers can share facts about the company's financial situation. Opinion: Express genuine opinions about unionization. A CEO can say 'I don't think a union would be good for this company' as long as it's not combined with a threat. Experience: Share examples from other companies where unionization led to specific outcomes. The key is sticking to verifiable facts and genuine opinions without crossing into threats, interrogation, promises, or surveillance.

How to File a ULP Charge

The process for filing and resolving ULP charges is straightforward, but timelines are critical.

Filing the charge

Anyone can file a ULP charge with the nearest NLRB Regional Office. The charge must be filed within six months of the alleged violation. This deadline is strict. The charge is filed on NLRB Form 501 (employer ULP) or Form 508 (union ULP). You don't need a lawyer. The form requires the name and address of the charged party, a brief description of the alleged violation, and the date it occurred. Electronic filing is available through the NLRB's website.

Investigation

An NLRB field agent investigates the charge by interviewing witnesses, reviewing documents, and gathering evidence. The investigation typically takes 7 to 14 weeks. During this period, the NLRB may encourage the parties to settle. About one-third of all charges are withdrawn or settled before a formal complaint is issued. If the Regional Director finds insufficient evidence, the charge is dismissed. The charging party can appeal the dismissal to the NLRB General Counsel.

Complaint and hearing

If the investigation finds merit, the Regional Director issues a formal complaint. The case goes to an administrative law judge (ALJ) who conducts a trial-like hearing. Both sides present witnesses and evidence. The ALJ issues a decision and recommended order. Either party can appeal to the full NLRB Board in Washington, D.C. The Board's decision can then be appealed to a federal circuit court.

Remedies for Unfair Labor Practices

The NLRB's remedial powers are designed to restore the status quo, not to punish. This is both a strength and a limitation of the system.

RemedyWhen AppliedEffectiveness
Cease-and-desist orderAll ULP findingsTells the violator to stop. Limited deterrent effect.
Notice postingAll ULP findingsEmployer must post notices informing employees of their rights. Raises awareness but doesn't undo harm.
Back payDiscriminatory discharge or demotionEmployee receives wages lost from the date of termination to reinstatement, minus interim earnings.
ReinstatementDiscriminatory dischargeEmployee returns to their former position or substantially equivalent one.
Bargaining orderSevere 8(a)(1) or 8(a)(5) violationsEmployer must recognize and bargain with the union even without a formal election.
Gissel bargaining orderEmployer misconduct so severe it prevents a fair electionRare. Employer must bargain based on authorization card majority.
Make-whole reliefVarious situationsRestore the employee to the position they would have been in absent the ULP (includes lost benefits, opportunities).

Unfair Labor Practice Statistics [2026]

Data on the scope and impact of ULP enforcement in the United States.

21,678
ULP charges filed with the NLRB in FY 2023NLRB Annual Report, 2023
91%
Of ULP charges filed against employers (vs. 9% against unions)NLRB, 2023
$32M+
Back pay and damages recovered for workers in ULP casesNLRB Annual Report, 2023
6 months
Statute of limitations for filing a ULP chargeNational Labor Relations Act, Section 10(b)

Frequently Asked Questions

Can my employer fire me for supporting a union?

No. Terminating an employee for union activity is a textbook Section 8(a)(3) violation. If your employer fires you after learning about your union support, you can file a ULP charge with the NLRB. If the NLRB finds merit, it can order your reinstatement with back pay. The challenge is proving that the union activity was the real reason for the termination. Employers often claim performance issues or policy violations as pretextual reasons. The NLRB examines the timing, the employer's knowledge of union activity, and whether non-union employees were treated differently for similar conduct.

What's the penalty for committing a ULP?

The NLRA is a remedial statute, not a punitive one. There are no fines for ULP violations. The typical remedies are cease-and-desist orders, notice posting, back pay, and reinstatement. Critics argue this makes ULPs a cost of doing business for large employers. Firing a union organizer and paying back pay two years later can be cheaper than dealing with a unionized workforce. The NLRB General Counsel has pushed for broader remedies (consequential damages, front pay), and some reform proposals (like the PRO Act) would add civil penalties for ULPs.

Can a union commit an unfair labor practice?

Yes. Section 8(b) of the NLRA covers union ULPs. Unions can violate the law by coercing employees, causing employer discrimination against non-members, engaging in secondary boycotts, charging excessive dues, or refusing to bargain in good faith. About 9% of ULP charges are filed against unions. The most common union ULP is breach of the duty of fair representation, where the union fails to adequately represent a member in a grievance proceeding.

How long does it take to resolve a ULP case?

Initial investigation takes 7 to 14 weeks. If the NLRB issues a complaint, the ALJ hearing and decision can take another 6 to 12 months. Appeals to the full Board add 1 to 2 years. Federal court appeals add another 1 to 2 years. Total resolution from charge to final order can take 3 to 5 years. This timeline is widely criticized because by the time a remedy is issued, the organizing campaign is long over and the deterrent effect is minimal. Section 10(j) injunctions provide faster relief but are used selectively.

Does the NLRA cover all workers?

No. The NLRA excludes agricultural laborers, domestic workers, independent contractors, supervisors, managers, confidential employees, and government employees (federal, state, and local). Federal employees are covered by the Federal Service Labor-Management Relations Act, which has its own ULP provisions. State and local government employees are covered by state laws, which vary widely. Some states have strong public-sector bargaining laws; others have none. The exclusions mean that millions of American workers have limited or no ULP protections.

What should I do if I think my employer committed a ULP?

Document everything: dates, times, witnesses, what was said or done. Don't confront the employer directly about the legal violation. File a ULP charge with your nearest NLRB Regional Office within six months of the violation. You can file online at nlrb.gov. You don't need a lawyer, though having one helps with complicated cases. The NLRB will investigate. Keep copies of any written communications, performance reviews, or policy changes that might be relevant. If you're part of a union, inform your union representative, as the union may file the charge on your behalf.
Adithyan RKWritten by Adithyan RK
Surya N
Fact-checked by Surya N
Published on: 25 Mar 2026Last updated:
Share: