The collective bargaining process is the legally structured negotiation between an employer and a union certified to represent its employees, aimed at producing a written agreement on wages, hours, and working conditions. Federal law requires both sides to meet and negotiate in good faith once a union is in place, but it does not force either side to accept any particular proposal or make any specific concession.1Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices The rules below come from the National Labor Relations Act and apply to most private-sector workplaces.
Some workers sit outside that framework entirely. The NLRA excludes federal, state, and local government employees, agricultural workers, domestic workers in a household, independent contractors, and supervisors.2Office of the Law Revision Counsel. 29 USC 152 – Definitions Railroad and airline workers fall under the separate Railway Labor Act. Public employees have bargaining rights in roughly two-thirds of states, but under state law that varies widely; some states grant full rights, some limit bargaining to narrow topics, and a handful prohibit it outright.
Getting a Union to the Table
Bargaining doesn’t start until employees have an officially recognized union. There are two paths.
The first is an NLRB-supervised election. Employees or a union file a petition with the National Labor Relations Board backed by authorization cards signed by at least 30 percent of the employees in the proposed bargaining unit.3Office of the Law Revision Counsel. 29 USC 159 – Representatives and Elections The Board investigates, then holds a secret-ballot election. If a majority of those who vote choose union representation, the NLRB certifies the union. No new election can be held in that same unit for 12 months.
The second is voluntary recognition, where the employer accepts evidence that a majority of employees support the union, usually through signed authorization cards, and skips the election.
Either way, once certified or voluntarily recognized, the union becomes the exclusive representative of every employee in the bargaining unit. The employer negotiates with that one entity, not with individual workers or with any competing group, and the union speaks for everyone in the unit regardless of whether they voted for it or joined as members.3Office of the Law Revision Counsel. 29 USC 159 – Representatives and Elections In return, the union owes every employee in the unit a duty of fair representation: it must handle bargaining and grievances in good faith and without discrimination, and it cannot, for example, refuse to pursue a grievance because an employee criticized union leadership or declined to become a member.4National Labor Relations Board. Right to Fair Representation
What Good-Faith Bargaining Actually Requires
The NLRA defines collective bargaining as the mutual obligation of the employer and the union to meet at reasonable times and negotiate in good faith over wages, hours, and other working conditions. If the parties reach an agreement, either side can require that it be put in writing. The statute is explicit that this obligation does not force either side to agree to any proposal or make a concession.1Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices
Good faith is easier to describe by what breaks it. Showing up but refusing to make any counterproposals, holding out for terms known to be unacceptable purely to force a deadlock, or refusing to hand over relevant financial information after claiming inability to pay all cross the line. The NLRB looks at the totality of a party’s conduct rather than any single act. Flat refusal to bargain is itself a straightforward unfair labor practice.
What Can and Can’t Be Bargained
Federal labor law sorts subjects into three categories, and the category controls how much either side can push.
Mandatory Subjects
Wages, hours, and other terms and conditions of employment must be bargained if either side raises them.1Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices That sweeps in base pay and overtime rates, health insurance contributions, pensions, paid time off, work schedules, seniority rules, layoff procedures, and workplace safety. Refusing to negotiate over a mandatory subject is an unfair labor practice, and an employer cannot make unilateral changes to any mandatory subject without first bargaining to impasse.
Permissive Subjects
Anything outside that core is permissive. Either side may bring it up, and the other may agree to discuss it, but neither side can push a permissive subject to deadlock. Internal union governance, the makeup of the bargaining teams, and broad corporate decisions unrelated to labor costs generally fall here. Insisting on a permissive subject as a condition of signing a contract can itself become an unfair labor practice.
Illegal Subjects
Some proposals can’t be in a contract at all, and would be unenforceable even if both sides agreed. The classic example is the closed shop, an agreement to hire only union members, which has been illegal under federal law since 1947.5National Labor Relations Board. 1947 Taft-Hartley Substantive Provisions A clause requiring employees to waive rights under federal anti-discrimination laws would be similarly unenforceable.
Stages of a Negotiation
Preparation
The real work starts before anyone sits down. Both sides research industry pay standards, analyze the employer’s finances, survey employee priorities, and review the existing contract if there is one. Union bargaining committees collect input from members about which issues matter most; management teams identify cost constraints and operational priorities. That homework drives the opening proposals, and the side that prepares better usually bargains from a stronger position.
Proposals and Trade-Offs
At the table, both sides exchange written proposals covering the subjects they want to address. Early sessions clarify what each side wants and why. The real movement happens as proposals get modified and traded, with each side conceding on lower-priority items to hold ground on the ones that matter most. Technical issues like health plan design or retirement fund structures often go to subcommittees that can work through the details without slowing the main talks.
Tentative Agreement and Ratification
When the negotiators reach agreement on all terms, the result is a tentative agreement. It becomes binding only after both sides approve it through their own internal processes. Union members vote, typically by secret ballot, and a majority decides whether to ratify. Management usually seeks approval from its leadership or board. If both sides ratify, the tentative agreement becomes the new collective bargaining agreement and is legally binding.
Renegotiating an Expiring Contract
A party that wants to modify or end an existing agreement must follow specific notice rules built into the statute. Written notice goes to the other side 60 days before the expiration date, along with an offer to meet and negotiate a replacement. If no agreement is reached within 30 days of that notice, the party must notify the Federal Mediation and Conciliation Service and any relevant state mediation agency. Throughout that 60-day window the existing contract stays in full effect, and neither strikes nor lockouts are permitted. An employee who strikes during the notice period loses protected status under the NLRA.1Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices
Once a contract actually expires without a replacement, the employer cannot wipe the slate clean. Most existing terms and conditions remain in effect as a status quo the employer must maintain until either a new agreement is reached or the parties bargain to a genuine impasse. Unilateral changes to wages, benefits, or working conditions before that point are an unfair labor practice.
When Talks Break Down
An impasse occurs when both sides have bargained in good faith but reached a genuine deadlock on mandatory subjects. It’s more than frustration or slow progress: the NLRB looks at whether the parties’ positions have hardened to the point where further negotiation would be futile. Impasse unlocks consequences on both sides. The employer gains the right to unilaterally implement its last offer on mandatory subjects, and the union gains firmer ground for economic action.
Mediation
Mediation is usually the first tool. A neutral mediator, often from the Federal Mediation and Conciliation Service, meets with both sides to test extreme positions and search for creative solutions. The mediator cannot impose a settlement. The process works because a skilled outsider can say things to each side that the other party cannot.
Strikes, Lockouts, and Replacement Workers
The NLRA preserves the right to strike.6Office of the Law Revision Counsel. 29 USC 163 – Right to Strike A walkout over wages, benefits, or other economic terms is an economic strike. A walkout in response to the employer’s NLRA violations is an unfair labor practice strike. The distinction matters because of what happens with replacements. In an economic strike, the employer may hire permanent replacements, fill strikers’ jobs, and is not required to fire the replacements when strikers offer to return. Strikers keep their status as employees and cannot be discriminated against for union activity, but they may find their positions permanently filled. In an unfair labor practice strike, the employer may hire only temporary replacements, and once strikers make an unconditional offer to return, the employer must reinstate them even if that means letting the replacements go. The NLRB’s classification of a strike is often fiercely contested for exactly this reason.
A lockout is the employer’s mirror image of a strike: the employer temporarily bars employees from working to apply pressure. Both strikes and lockouts are subject to the Section 8(d) notice requirements when they involve modifying or ending an existing contract.
Enforcing the Contract
A collective bargaining agreement is only as useful as the mechanism for enforcing it. Nearly every CBA includes a grievance procedure, a structured way to resolve disputes over whether the employer or the union is violating the contract.
Grievance procedures move through escalating steps. Most start with an informal conversation between the employee, a union steward, and the immediate supervisor. If that doesn’t resolve the issue, the grievance is put in writing and moves up to higher-level management and union representatives, with deadlines at each step for the employer’s written response. The goal is to resolve problems at the lowest level possible, because the further a grievance travels, the more disruptive and expensive it becomes.
The final step is usually binding arbitration. A neutral arbitrator hears evidence from both sides and issues a written decision. Federal labor policy strongly favors this process; under a line of Supreme Court decisions known as the Steelworkers Trilogy, courts are expected to enforce arbitration clauses in CBAs and defer to the arbitrator’s judgment rather than reweigh the merits of a grievance.7Justia. Steelworkers v. American Mfg. Co., 363 US 564 (1960) An arbitrator’s decision binds both parties and is extremely hard to overturn in court.
If a union refuses to process a legitimate grievance or handles it in a discriminatory way, the affected employee may have a claim against the union for breaching its duty of fair representation.4National Labor Relations Board. Right to Fair Representation Either party can also sue in federal court to enforce a CBA under Section 301 of the Labor Management Relations Act.8Office of the Law Revision Counsel. 29 USC 185 – Suits by and Against Labor Organizations
Filing an Unfair Labor Practice Charge
An unfair labor practice is any action by an employer or union that violates rights established by the NLRA. On the employer side, common violations include refusing to bargain, retaliating against employees for union activity, and making unilateral changes to working conditions without bargaining. On the union side, they include coercing employees, refusing to bargain in good faith, and breaching the duty of fair representation.
Charges are filed with the nearest NLRB regional office. The deadline is strict: the charge must be filed within six months of the unfair labor practice.9Office of the Law Revision Counsel. 29 USC 160 – Prevention of Unfair Labor Practices Miss the window and the NLRB cannot act, no matter how clear the violation. After the charge is filed, NLRB agents investigate, and the regional director typically issues a decision on the merits within 7 to 14 weeks.10National Labor Relations Board. Investigate Charges Most charges end in settlement, withdrawal, or dismissal. When a charge has merit and no settlement is reached, the Board issues a formal complaint and the case proceeds to a hearing before an administrative law judge. Remedies can include reinstatement of fired employees and back pay. A charging party whose case is dismissed can appeal to the NLRB’s Office of Appeals in Washington within two weeks.
Individual Rights Inside the Process
Section 7 of the NLRA guarantees employees the right to organize, form or join a union, bargain collectively, and engage in other group activities for mutual aid or protection. It also guarantees the right to refrain from any of these activities.11Office of the Law Revision Counsel. 29 USC 157 – Rights of Employees An employer who fires, demotes, or disciplines an employee for exercising these rights commits an unfair labor practice, and a union that coerces employees into participating does the same.
These protections extend past formal union activity. Employees who discuss wages with coworkers, circulate a petition about working conditions, or collectively refuse unsafe work are engaged in protected concerted activity under Section 7 even where no union exists. Many NLRB charges involve exactly this kind of dispute in non-union workplaces.
On dues and fees, federal law permits but does not require union security agreements. Where allowed, an employer and union can agree that employees must become union members within 30 days of hire.1Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices In practice, “membership” under such agreements means paying regular dues and initiation fees; no one can be fired for declining to participate in union activities beyond that. The NLRA further allows states to pass right-to-work laws that prohibit any agreement requiring union membership or fee payment as a condition of employment.12Office of the Law Revision Counsel. 29 USC 164 – Construction of Provisions Roughly half of states have enacted such laws. In those states, employees in a unionized workplace can decline to join and decline to pay any dues or fees while still receiving the benefits of the union’s representation.