A union works by letting a group of employees speak to their employer as one voice, backed by federal law that forces the employer to sit down and negotiate a written contract over pay, hours, and working conditions. Once workers vote to organize, the union becomes the exclusive bargaining representative for everyone in the defined group, whether they personally joined or not. The contract that comes out of bargaining sets the rules of the workplace for a fixed number of years and is enforceable through a grievance process that ends, if necessary, in binding arbitration. Dues from members pay for the bargaining, the lawyers, and the day-to-day representation.
What a Union Actually Does at Work
The starting point is Section 7 of the National Labor Relations Act, which guarantees most private-sector employees the right to form or join a union, bargain collectively, and act together to improve working conditions. It also protects the right to stay out of union activity.1Office of the Law Revision Counsel. 29 U.S. Code 157 – Right of Employees as to Organization, Collective Bargaining, Etc. Agricultural laborers, independent contractors, supervisors, and managers fall outside the Act’s coverage.2National Labor Relations Board. Basic Guide to the National Labor Relations Act Public-sector workers are covered by separate state and federal rules.
Once a union is in place, it negotiates a collective bargaining agreement that governs wages, benefits, scheduling, discipline, and safety. It represents individual employees in disputes with management. And it enforces the contract through a grievance and arbitration process. Employers cannot legally fire, demote, transfer, or otherwise retaliate against you for supporting a union; doing so is an unfair labor practice you can challenge through the National Labor Relations Board.3Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices
How a Workplace Becomes Unionized
Organizing starts with authorization cards. Employees circulate cards indicating support for union representation, and at least 30 percent of workers in the proposed bargaining unit have to sign before a petition can move forward.4Office of the Law Revision Counsel. 29 USC Chapter 7, Subchapter II: National Labor Relations – Section 159 Experienced organizers usually want far more than the minimum before filing anything, because a bare 30 percent showing rarely produces a win at the ballot box.
The bargaining unit itself has to be defined. This is the group of employees who share enough overlap in duties, pay structures, and conditions to negotiate together, and it might be an entire facility, a single department, or a particular craft.5National Labor Relations Board. Board Modifies Framework for Appropriate Bargaining Unit Standard Supervisors and managers stay out.
With enough cards in hand, organizers file a petition with the appropriate NLRB regional office. The regional office checks the cards against the employer’s payroll, and if the numbers hold and the unit is appropriate, the Board schedules a secret-ballot election, usually at the workplace. The union wins on a simple majority of the votes actually cast, not a majority of everyone eligible. After the tally, each side has five business days to file objections; if none are filed and no ballots remain in dispute, the regional director certifies the result.6eCFR. 29 CFR 102.69 – Election Procedure; Tally of Ballots; Objections; Certification Certification makes the union the exclusive representative of every employee in the unit, and the employer must recognize it and begin bargaining.
Voluntary Recognition and the Cemex Rule
An election is not the only route. If a majority of employees have signed authorization cards, the union can ask the employer to recognize it without a Board election. A 2023 NLRB decision, Cemex Construction Materials Pacific, LLC, sharpened this option: when a union requests recognition based on majority support, the employer must either recognize the union or promptly file its own petition asking the Board to hold an election. If the employer chooses an election and then commits unfair labor practices serious enough to taint the vote, the Board can skip a rerun and simply order the employer to bargain.7National Labor Relations Board. Board Issues Decision Announcing New Framework for Union Representation
How the Contract Gets Negotiated
Once a union is certified or recognized, both sides are legally required to meet at reasonable times and bargain in good faith over wages, hours, and other working conditions. Neither the employer nor the union can go through the motions or refuse to engage. The law does not, however, force either side to agree to any particular proposal or make a concession.8Office of the Law Revision Counsel. 29 USC 158(d) – Obligation to Bargain Collectively
A bargaining committee, typically made up of union staff and elected employee representatives, drafts proposals on wage scales, overtime, scheduling, health insurance, and safety. Management brings its own. Offers move back and forth across multiple sessions, and negotiations often run for months. When the two sides reach a tentative agreement, the union takes it back to the membership for a ratification vote. Nothing binds anyone until a majority of voting members approves. A successful vote turns the tentative deal into a collective bargaining agreement, usually running two to four years, and the contract is enforceable in federal court.8Office of the Law Revision Counsel. 29 USC 158(d) – Obligation to Bargain Collectively
First contracts are the hardest. The good-faith bargaining duty carries no deadline, and some employers stretch talks out hoping enthusiasm fades. When negotiations stall, the union must notify the Federal Mediation and Conciliation Service, which offers help settling the dispute.
What You Pay and What You Get
Unions run on member dues, generally set as either a flat monthly fee or a percentage of pay. The amount is fixed by the union’s constitution and bylaws and can only be raised through a membership vote.9Office of the Law Revision Counsel. 29 U.S. Code 431 – Report of Labor Organizations Most employers deduct dues from paychecks under a voluntary authorization and send the funds to the union. Dues pay for bargaining, legal representation, contract administration, and strike reserves. Federal law also requires unions to file annual financial reports with the Department of Labor, and larger unions must itemize assets, liabilities, officer pay, and expenditures on Form LM-2. The reports are public.10U.S. Department of Labor. Instructions for Form LM-2 Labor Organization Annual Report
Right-to-Work States and Non-Member Rights
Whether you have to pay anything depends on where you work. Federal law lets states pass right-to-work laws prohibiting any requirement of union membership or dues as a condition of employment.11Office of the Law Revision Counsel. 29 U.S. Code 164 – Construction of Provisions Around 26 states currently have these laws. In those states, employees in a unionized workplace can opt out of dues entirely and still receive the benefits of the contract.
In states without right-to-work laws, unions and employers can negotiate a union-security clause that requires fees from everyone in the unit. Even then, full membership is not required. Under the Supreme Court’s Beck decision, employees can pay only the portion of dues that funds core representational activities like bargaining and contract administration, cutting out political spending and other non-representational costs.12National Labor Relations Board. Union Dues Workers who reduce their payments this way keep contract protections but give up the right to vote in union elections or run for office.
Public-sector workers sit under a different rule. In Janus v. AFSCME (2018), the Supreme Court held that requiring public employees to pay any union fees without consent violates the First Amendment. Government employers cannot deduct fees from a non-member’s pay unless the employee affirmatively opts in, regardless of state law.
The Union Has to Represent You Either Way
Whether you pay full dues, reduced fees, or nothing at all, the union owes you a duty of fair representation. It must act in good faith and without discrimination in bargaining, grievance handling, and every other action it takes on your behalf. A union cannot refuse to process your grievance because you criticized its leadership or declined to join.13National Labor Relations Board. Right to Fair Representation
How the Contract Gets Enforced
A contract is only as strong as the process behind it. Nearly every collective bargaining agreement includes a multi-step grievance procedure that runs like this:
- Informal resolution. A shop steward, an employee elected or appointed to handle day-to-day representation, meets with the supervisor to try to fix the problem on the spot. Most grievances end here.
- Formal written grievance. If the informal talk fails, the union files a written grievance identifying the contract provision violated and the remedy it wants. This pushes the dispute up to department heads or senior management.
- Binding arbitration. When internal steps don’t resolve the matter, either side can send it to an independent arbitrator, who hears evidence and issues a final decision.
Courts enforce arbitration awards and set them aside only in narrow circumstances, such as fraud or the arbitrator exceeding the authority granted by the contract. For most workers, the arbitration route is a structured way to challenge unfair treatment without hiring a personal lawyer.
When Bargaining Fails: Strikes
If negotiations break down, the union’s strongest lever is a strike. Federal law protects the right to strike, but the reason for the walkout determines what happens to your job.14National Labor Relations Board. NLRA and the Right to Strike
An economic strike is a walkout over wages, hours, or benefits. Employees who strike to protest unfair labor practices are unfair labor practice strikers. Economic strikers cannot be fired for striking, but they can be permanently replaced during the walkout. When the strike ends, replaced economic strikers go on a preferential rehiring list rather than getting their jobs back right away. Unfair labor practice strikers are entitled to immediate reinstatement once the strike ends, even if the employer has to let replacement workers go.14National Labor Relations Board. NLRA and the Right to Strike That distinction is one of the highest-stakes calls in labor law.
Before walking out, unions typically hold a strike authorization vote. It isn’t required by the NLRA, but union bylaws almost always call for one, and it signals unity at the bargaining table. Strikers may picket near the workplace, though picketers who block entrances or engage in violence can lose their reinstatement rights.15National Labor Relations Board. Right to Strike and Picket
What Employers Can and Can’t Do During Organizing
Employers can share their views on unionization, but the line is drawn well short of pressure. Threatening to close a facility, promising benefits for voting no, interrogating employees about their union sympathies, and surveilling organizing activity are all unfair labor practices.3Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices
Mandatory anti-union meetings recently changed status. In late 2024, the NLRB ruled that so-called captive-audience meetings are unlawful, finding that requiring attendance under threat of discipline coerces employees in exercising their organizing rights. Employers can still hold meetings to state their views, but attendance has to be voluntary and no attendance records may be kept.16National Labor Relations Board. Board Rules Captive-Audience Meetings Unlawful This area of the law can shift as the Board’s composition changes with presidential appointments.
Voting a Union Out
Unionization is not permanent. Workers who become dissatisfied can petition the NLRB to hold a decertification election. The threshold mirrors the organizing petition: at least 30 percent of employees in the bargaining unit have to sign cards or a petition asking for the vote.17National Labor Relations Board. Decertification Election
Timing rules narrow the window. No decertification petition can be filed in the first year after certification. If a collective bargaining agreement is in place, a petition is generally barred during the first three years of that contract, and can only be filed in the 90-to-60-day window before the contract expires, or the 120-to-90-day window for healthcare employers. Once the three-year mark has passed or the contract has expired, a petition can be filed at any time.17National Labor Relations Board. Decertification Election A simple majority vote ends the union’s certification, and the employer no longer has to bargain with it. Employers are barred from initiating or assisting a decertification effort; the push must come from employees.