Union Organizing Rights in Illinois: What Workers Can Do

The National Labor Relations Act (NLRA), 29 U.S.C. § 151 et seq., is the primary federal law governing union organizing rights in the United States. Enacted in 1935, the NLRA establishes the fundamental right of employees in the private sector to organize unions, bargain collectively, and engage in protected concerted activity. The law covers employers engaged in interstate commerce with at least one employee; most private sector employers fall under federal jurisdiction.

Under NLRA § 7 (29 U.S.C. § 157), employees have the right to form, join, or assist labor organizations; bargain collectively through representatives of their own choosing; and engage in other concerted activities for mutual aid or protection. This includes discussing wages, hours, and working conditions with coworkers, distributing union literature (subject to reasonable employer restrictions), and wearing union insignia.

NLRA § 8 (29 U.S.C. § 158) prohibits employer unfair labor practices, including: interfering with, restraining, or coercing employees in the exercise of organizing rights; dominating or interfering with the formation of any labor organization; discriminating against employees based on union membership or activity; and retaliating against employees who file charges or testify under the Act. Employers may lawfully prohibit union solicitation during work time in work areas, impose rules against non-employee organizers on premises, and express anti-union views, but cannot make threats or interrogate employees about union support.

The National Labor Relations Board (NLRB), a federal agency with regional offices nationwide, enforces the NLRA. Employees can file unfair labor practice charges (Form ULP) with the NLRB's regional office within 180 days of the alleged violation. The NLRB investigates, and if it finds merit, seeks a settlement or litigates before an administrative law judge and the NLRB. Remedies include reinstatement with back pay, cessation of unlawful conduct, and attorney fees. The NLRB also oversees union certification elections under § 9 of the NLRA.

Illinois recognizes and enforces federal organizing rights under the NLRA for private sector employees and provides parallel protections for public sector workers under the Illinois Public Labor Relations Act (PLRA), 5 ILCS 315/1 et seq. Illinois does not impose additional restrictions on private sector organizing; rather, Illinois courts interpret and apply the NLRA consistently with federal precedent and often provide supplemental state remedies for violations of public policy favoring unionization.

For private sector employees in Illinois, the NLRA is the controlling law. The NLRB maintains two regional offices in Illinois—one in Chicago and one in Springfield—and processes all unfair labor practice charges through the federal system. Illinois courts recognize the supremacy of federal labor law but may award damages under state tort or contract law where union organizing violations also constitute breach of employment contract or public policy violations.

For public sector employees in Illinois (state and local government workers), the Illinois Public Labor Relations Act (PLRA) provides the governing framework. Under 5 ILCS 315, public employees have the right to organize, form, join, and assist employee organizations or unions; negotiate collectively through representatives of their choice; and engage in concerted activities for mutual aid or protection. The PLRA is substantively similar to the NLRA but applies exclusively to public sector employment.

Illinois public employers are prohibited from interfering with, discriminating against, or retaliating against employees for union activity. The PLRA covers employees of the state of Illinois, municipalities, counties, school districts, public universities, and other political subdivisions. Public sector employees file charges with the Illinois Labor Relations Board (ILRB), a state agency separate from the NLRB, within 180 days of the alleged violation.

Illinois strengthens organizing protections through its recognition of union security agreements and prevailing wage standards. Under the Illinois Prevailing Wage Act, 820 ILCS 130/1 et seq., employees on publicly funded construction projects receive union scale wages and benefits, creating incentives for unionization in that sector. Illinois has also adopted strong public policy favoring labor organizing, reflected in court decisions protecting union activity and interpreting restrictive employer rules narrowly.

A key state-specific protection: Illinois recognizes "right to refusal" doctrines that protect employees who refuse to cross picket lines or participate in strike-breaking activities, even absent explicit union contract language, under a theory of public policy. Additionally, Illinois state contractors and vendors must comply with Project Labor Agreements (PLAs) on major public works projects, which mandate union representation and wages.

Union organizing rights in Illinois are broad under both the NLRA and PLRA, but several important exceptions and limitations apply. Supervisors and independent contractors are excluded from NLRA protection. Under NLRA § 2, supervisors are defined as employees who have independent authority to hire, fire, discipline, or direct others in their work. Supervisors have no statutory right to organize under federal law, though Illinois state law may provide some protections. Independent contractors are not employees under the NLRA and have no right to organize.

Employers may lawfully restrict union solicitation and literature distribution in certain circumstances. While employees have broad rights to discuss unionization, employers may enforce reasonable rules: no solicitation of union support during work time in work areas; no distribution of union literature during work time in work areas (though employees may read materials during breaks); and no non-employee organizers in work areas. These restrictions must be applied consistently and must not target union activity specifically. If an employer permits distribution of charitable, political, or other non-work materials, it cannot single out union literature for prohibition.

At-will employment remains in effect during organizing drives. Employers may discharge employees for lawful reasons, poor performance, or misconduct unrelated to union activity. The critical distinction: if union activity is the motivating factor or substantial factor in the termination decision, the discharge is unlawful. Illinois courts apply a "dual motive" test—if the employer's stated reason appears to be pretextual and union activity was present, the employer must prove by clear and convincing evidence that it would have discharged the employee anyway for the lawful reason.

Public sector exceptions: teachers and certain classes of public employees may be excluded from PLRA coverage depending on their classification. Confidential employees (those with access to sensitive labor relations information) and certain management officials are excluded from both NLRA and PLRA. Illinois law also permits employers to ban non-employee organizers from workplace property if reasonable time, place, and manner restrictions exist—for example, organizers may be confined to parking lots.

Electoral restrictions: Once a union has achieved recognition or filed for a certification election, the NLRB imposes a 12-month period before another union may petition to challenge the incumbent union (the union security period). Additionally, employees cannot organize a competing union within 12 months of a failed election.

Retaliation litigation burden: Although the NLRA prohibits retaliation, the employee bringing the charge bears the initial burden of establishing that union activity was a motivating factor in the adverse action. The employer then bears the burden of proving by clear and convincing evidence that it would have taken the same action absent the protected activity. This is a high standard, but non-compliance with notice posting requirements or prior violations can strengthen an employee's case.

Step 1: Document the violation carefully. Keep detailed records of all communications, including written statements of threats or interrogations (save text messages, emails, and written warnings); dates and times of conversations; names of witnesses to unlawful conduct; and any adverse employment actions (discipline, termination, demotion, reduction in hours) that follow union activity. Document your own union activity: when you began organizing, what you said, who you spoke with, and when. Preserve all materials: union literature you distributed, emails about organizing, meeting minutes, and correspondence with union representatives. Take screenshots of digital communications and keep handwritten notes in a secure location outside the workplace.

Step 2: Understand the internal complaint process and its strategic importance. Before filing an external charge, consider whether your employer has a formal grievance procedure outlined in an employee handbook or collective bargaining agreement (if one exists). Filing an internal complaint creates a documented record and may preserve your credibility if the employer later claims you never raised the issue. However, do not delay external filing to pursue internal remedies; the 180-day statute of limitations runs from the date of the violation, and internal processes may take weeks. If your employer has a history of anti-union animus or retaliation, consult an attorney before filing an internal complaint, as doing so may alert management and trigger escalated retaliation. Internal complaints are not required by law but can strengthen your case by showing the employer had notice of the problem.

Step 3: File an unfair labor practice charge with the correct agency and within the legal deadline. For private sector employees in Illinois, file with the National Labor Relations Board (NLRB). The NLRB maintains a Chicago Regional Office (serves Northern Illinois) and a Springfield Regional Office (serves Central and Southern Illinois). Charges can be filed online at www.nlrb.gov (select "File a Charge"), by mail, or in person at the regional office. The charge form is called the "ULP" (Unfair Labor Practice) form. The deadline is 180 days from the date of the alleged violation; this is a strict deadline—late charges are dismissed without review. For public sector employees, file with the Illinois Labor Relations Board (ILRB) at www.cyberdriveillinois.com/departments/labor, or contact the ILRB at 217-782-0583. Include in your charge: your full name, contact information, employer name and address, concise description of what the employer did (threat, interrogation, discipline, termination, etc.), the date(s) of the violation, names of any witnesses, and copies of supporting documents. Provide a clear statement such as: "On [date], my employer [specific action] because I was engaged in protected union organizing activity." The NLRB will send you a confirmation letter and assign an investigator.

Step 4: Understand the NLRB or ILRB investigation process and timeline. After you file, the agency appoints an investigator who will contact you within 5 to 10 business days. You will be asked to provide a detailed statement and copies of all evidence. The investigator will then contact the employer for its response. This investigation phase typically takes 60 to 90 days, though complex cases may extend longer. During this time, the investigator may interview witnesses, review employer records, and assess the employer's stated reasons for the adverse action. You will be notified of the investigator's findings. If the investigator finds merit (that is, reasonable cause to believe the employer violated the law), the NLRB or ILRB will attempt to reach a settlement with the employer. Many cases settle at this stage with the employer agreeing to reinstate you, pay back wages, post a notice of employee rights, and cease the unlawful conduct. If no settlement is reached, the agency will issue a "complaint" formalizing the charges. The case then proceeds to a hearing before an administrative law judge, which can take 6 to 12 additional months. An ALJ hearing is formal, with testimony under oath, cross-examination, and written decisions. Expect the entire process from filing to final agency order to take 12 to 24 months.

Step 5: Know when to consult an attorney and what type of attorney you need. Consult an attorney immediately if: (1) you have been terminated or suspended; (2) the employer has made explicit threats (e.g., "If you unionize, I will close this facility"); (3) there is a pattern of retaliation against multiple employees; or (4) you are unsure whether your activity is protected. An attorney specializing in labor and employment law, particularly one with NLRB experience, can evaluate the strength of your claim, advise whether internal complaints should be filed first, and represent you before the NLRB or ILRB. Many labor attorneys work on contingency for meritorious cases, meaning you pay no upfront fees and the attorney recovers attorney fees from the employer if you prevail. If you cannot afford an attorney, contact the National Employment Law Project (NELP) or a local labor union, which often provides free legal support to organizing workers. The NLRB does not require attorney representation, and you can represent yourself, but having counsel significantly increases your likelihood of success.