Spying on organizers, threatening workers, bribing supervisors, punishing union supporters — all of it is illegal. Know exactly what your employer cannot do and how to hold them accountable.
Retaliation for union activity is illegal everywhere. If you were fired, demoted, disciplined, or threatened after union activity — that is an unfair labour practice with serious legal consequences for your employer.
⚖️ Section 7 Rights (and Their Global Equivalents)
In the US, Section 7 of the National Labor Relations Act guarantees workers the right to organize, join unions, bargain collectively, and engage in concerted activity for mutual aid. Employers who interfere with these rights commit a Section 8(a) unfair labour practice. Every country covered here has equivalent protections — the legal framework differs but the core principle is the same: your employer cannot punish you for union activity.
🚫 Illegal Employer Tactics — The Full List
These are the most common employer interference tactics — each one is an unfair labour practice in every country covered here.
🚫 Surveillance of organizersWatching, photographing, or recording workers during union meetings or organizing activity. Monitoring social media to identify organizers. Sending supervisors to observe workers' homes or off-site meetings.
🚫 Threatening workersTelling workers they will be fired, demoted, or face benefit cuts if they vote for a union or engage in organizing. Implied threats ("things will change around here if the union wins") are equally illegal.
🚫 Interrogating workers about union activityQuestioning workers about whether they have signed authorization cards, who else is organizing, or what was discussed at union meetings — even in a seemingly casual conversation.
🚫 Making promises to discourage organizingPromising wage increases, improved conditions, or new benefits specifically timed to discourage workers from voting for a union. These promises — even if fulfilled — are illegal interference.
🚫 Disciplining or firing union supportersTargeting union organizers or active members for discipline, demotion, unfavorable scheduling, or termination — even when framed as being for unrelated performance reasons.
🚫 Refusing to bargain in good faithOnce a union is certified, the employer must negotiate in good faith. Surface bargaining (going through the motions without intent to agree), unilateral changes to working conditions, and refusing to provide information the union needs for bargaining are all violations.
🚫 Bypassing the union to deal directly with workersNegotiating wages, hours, or conditions directly with individual workers — rather than through the certified union — undermines the collective agreement and is an unfair labour practice.
🚫 Company unions / employer-dominated organizationsSetting up or funding a competing "employee association" that management controls, as an alternative to legitimate union representation. Known as a company union — illegal under the NLRA and equivalent laws.
🌎 Legal Framework by Country
🇺🇸
United States
Law: NLRA Section 8(a) — lists five categories of employer unfair labour practices: interfering with Section 7 rights, dominating a labor organization, discriminating based on union activity, retaliating for filing NLRB charges, and refusing to bargain in good faith.
Remedies: NLRB orders can require reinstatement with back pay, posting of notices, cessation of illegal conduct, and in repeat-violation cases, enhanced remedies including bargaining orders.
File: NLRB regional office — 1-844-762-6572. Deadline: 6 months from the violation.
🇨🇦
Canada
Law: Canada Labour Code Section 94 (federal) and provincial equivalents. Employers cannot interfere with the formation of a union, contribute financially to a union, threaten or coerce workers, or discriminate based on union membership or activity.
Quebec: Code du travail Article 12 — employers cannot interfere with, restrain, or coerce employees in exercising their rights to organize or be represented. Remedies include reinstatement, back pay, and certification orders.
File: Federal — CIRB (1-800-575-9696). Quebec — CNESST (1-844-838-0808) or Tribunal administratif du travail. Deadline: typically 30–90 days depending on province.
🇬🇧
United Kingdom
Law: Trade Union and Labour Relations (Consolidation) Act 1992 — employers cannot subject workers to detriment or dismissal for trade union membership, activities, or for making use of trade union services.
Automatic unfair dismissal: Dismissal for trade union reasons is automatically unfair — no qualifying period of employment is required. This is one of the strongest protections in UK employment law.
File: Employment Tribunal. ACAS early conciliation first. Deadline: 3 months less 1 day. Contact ACAS — 0300 123 1100.
🇫🇷
France
Law:Code du travail Articles L2141-5 and L2146-1 — employers cannot take measures that damage the employment conditions of workers because of their union activities or membership. Union representatives have special legal protection (protection des représentants du personnel) — they cannot be dismissed without prior authorization from the labour inspector.
File: Inspection du travail (3646) or Conseil de prud'hommes.
🇲🇽
Mexico
Law:Ley Federal del Trabajo Articles 133 and 357 — employers cannot prevent workers from organizing, condition employment on union membership or non-membership, or interfere with union elections. The 2019 reform introduced secret ballot elections and ended employer influence over union certification.
File: CFCRL or PROFEDET — 800-911-7877. Deadline: 2 months.
📝 How to Report Employer Interference
1Document every incident immediately and specifically
For each incident: date, time, location, who was present, exact words used, and what action followed. This is especially critical for verbal threats — courts and labour boards rely heavily on contemporaneous notes when no recording exists.
2Collect corroborating evidence
Written communications — emails, texts, memos referencing union activity or organizers
Disciplinary records showing timing correlation with union activity
Pay records or scheduling changes that followed organizing activity
Witness names — colleagues who heard threats or observed surveillance
3File the unfair labour practice charge
File immediately — do not wait for the campaign or organizing effort to conclude. An ULP charge can be filed at any point during organizing and can result in interim remedies (such as reinstatement of fired organizers) while the main case proceeds. In the US, file with the NLRB regional office. In Canada, file with the relevant provincial labour relations board or CIRB. In the UK, file with the Employment Tribunal after ACAS conciliation.
4Contact a labour lawyer immediately if you were fired
Dismissal for union activity is among the most clear-cut unfair labour practice cases — and the remedies include full reinstatement with back pay. A lawyer can also assess whether the termination opens additional claims (wrongful dismissal, retaliation) that run parallel to the ULP complaint.
🔍 Top Questions
"My manager held a meeting about why the union would be bad for us. Is that legal?"
It depends on what was said. Employers are generally allowed to share factual information about their views on unionization — this is called "free speech" under labour law. However, the meeting becomes an unfair labour practice if it includes threats (explicit or implied), promises of benefits, interrogation about union support, or surveillance of workers. The classic illegal tactic is the "captive audience meeting" where attendance is mandatory and threats are implied. Document exactly what was said and file a charge if threats were involved.
"My employer gave us a raise right before the union vote. Is that legal?"
No — in most jurisdictions, timing a raise specifically to influence a union vote is an unfair labour practice (interference by promise of benefit). The raise itself may be allowed to stand, but the employer's conduct can still be sanctioned. Document the timing and file an ULP charge with your labour board.
"I was fired two weeks after I signed a union card. Can I prove it's related?"
Timing is one of the strongest forms of circumstantial evidence in ULP cases. A termination within days or weeks of known union activity — especially when the employer has changed its story about the reason — is exactly the kind of pattern labour boards take seriously. File an ULP charge immediately and preserve all evidence of your performance record and the employer's stated reason for firing you.
File Before the Deadline — Interference Cases Have Short Windows
🇺🇸 USA6 Months
NLRB — from date of violation.
🇨🇦 Canada30–90 Days
Provincial board — varies.
🇬🇧 UK3 Months −1 Day
Employment Tribunal.
🇫🇷 France5 Years
Prud'hommes civil claim.
🇲🇽 Mexico2 Months
CFCRL / Labour Tribunal.
*Confirm exact deadlines with legal aid immediately.
Log Employer Interference — Before Evidence Disappears
Use the WORKWARS App to document every threat, surveillance incident, and retaliatory action with timestamps — ready for your ULP filing.
