To cancel your union membership and stop dues, send a written resignation letter to your union by certified mail, then separately revoke the dues check-off authorization you signed with your employer. Those are two different steps, and skipping the second one is why people keep seeing deductions after they thought they had quit. Whether any payment obligation remains after you leave depends on whether you work in the public or private sector and, if private, whether your state has a right-to-work law.
Writing and Sending the Resignation Letter
Your right to resign is not something the union grants you. Section 7 of the National Labor Relations Act protects the right to refrain from union activity, and the Supreme Court held in Pattern Makers’ League v. NLRB that a union cannot restrict or punish a member for leaving.1Justia Law. Pattern Makers v. NLRB, 473 U.S. 95 (1985) If your union’s constitution says you can only resign during a specific window each year, that restriction is unenforceable as a matter of federal law.2National Labor Relations Board. National Labor Relations Act
Look at your union’s constitution or membership agreement anyway, but only to find the correct mailing address, usually for the secretary-treasurer of the local or national. Then draft a short letter. Include your full name, home address, union local number, and one sentence stating that you are resigning your membership effective immediately. Keep it factual. You do not owe anyone an explanation, and offering one only invites a response that slows things down.
Send the letter by certified mail with return receipt requested. The green card you get back proves the date the union received your resignation, and that date will matter if anything goes wrong later. If you hand-deliver it instead, bring two copies and have a union official sign and date one as received. Keep everything.
Stopping the Paycheck Deductions
Resignation ends your membership. It does not, by itself, stop your employer from continuing to send money to the union. Those deductions come out of your check because you signed a dues check-off authorization when you joined, and that authorization has its own separate rules for cancellation.
Federal law caps how long a check-off can be irrevocable: one year from the date you signed it, or the end of the current collective bargaining agreement, whichever comes first.3Office of the Law Revision Counsel. 29 U.S. Code 186 – Restrictions on Financial Transactions After that, you get a recurring annual window to revoke. Many contracts set that window at 30 to 45 days before the anniversary of your authorization or before the CBA expires. The exact dates are in your collective bargaining agreement or on the authorization card you signed. Find them before you write anything.
To revoke, send written notice to both your employer’s payroll department and the union, stating clearly that you are revoking your dues check-off authorization. Certified mail again. If you miss the window, your resignation still stands, but deductions will keep coming out of your paycheck until the next window opens.
What You Still Owe After You Leave
Resignation ends membership. It does not automatically end every financial obligation. What remains depends on your sector and your state.
Public-Sector Workers
If you work for a federal, state, or local government employer, you owe nothing once you resign. The Supreme Court held in Janus v. AFSCME that requiring a public-sector employee to pay any fee to a union without affirmative consent violates the First Amendment.4Supreme Court of the United States. Janus v. State, County, and Municipal Employees, 585 U.S. ___ (2018) No agency fee, no fair-share fee, no substitute payment.
Private-Sector Workers in Right-to-Work States
Roughly 27 states have right-to-work laws that prohibit conditioning employment on union membership or the payment of union fees. The NLRA expressly permits states to pass these laws.5Office of the Law Revision Counsel. 29 U.S. Code 164 – Construction of Provisions In these states, once your check-off is revoked, the financial relationship is over.
Private-Sector Workers in Non-Right-to-Work States
Here the answer is more limited. A collective bargaining agreement can require every employee in the bargaining unit to pay fees to the union as a condition of employment, even after resigning membership.6Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices But the most you can be forced to pay is the “financial core” amount that covers collective bargaining, contract administration, and grievance handling. In Communications Workers v. Beck, the Supreme Court held that non-members can object to paying for anything else, including political spending, lobbying, and ideological activities.7Legal Information Institute. Communications Workers of America v. Beck, 487 U.S. 735 (1988)
To exercise Beck rights, send a written objection to the union’s secretary-treasurer identifying yourself, your bargaining unit, and your objection to paying for non-representational activities. The union must then provide an accounting and reduce your fee. Some unions run an annual window for these objections, so check the union’s published procedures.
Religious Objectors
If you belong to a religion that historically opposes supporting labor organizations, Section 19 of the NLRA lets you pay an equivalent amount to a tax-exempt charity instead of the union. The charity must be a 501(c)(3) that is not religious and not affiliated with a labor union. Your contract should list at least three qualifying options; if it doesn’t, you can pick one yourself. One catch: if you later need the union to file a grievance for you, it can charge the reasonable cost of handling it.8Office of the Law Revision Counsel. 29 USC 169 – Employees With Religious Convictions; Payment of Dues and Fees
What Changes and What Doesn’t
Your job is not at risk. Federal law prohibits an employer from firing or disciplining you for choosing not to belong to the union, as long as you meet any lawful financial obligations that still apply.6Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices Your wages, hours, and working conditions still fall under whatever collective bargaining agreement covers your unit. That contract applies to everyone in the bargaining unit regardless of membership status.
What you lose are the internal rights of membership: voting on contract ratification, electing officers, voting on strike authorization. Those belong to dues-paying members only.
What you keep, and what the union may not mention, is the union’s duty of fair representation. The NLRB has made clear that a union cannot refuse to process a grievance because the employee is no longer a member.9National Labor Relations Board. Right to Fair Representation It must handle your grievances in good faith, the same as it would for anyone else in the unit. If it doesn’t, that is itself an unfair labor practice.
If the Union Refuses to Honor Your Resignation
Most resignations go through without incident. If yours doesn’t, if the union ignores your letter, keeps assessing dues after your check-off revocation takes effect, or threatens discipline for leaving, those actions violate Section 8(b)(1)(A) of the NLRA.6Office of the Law Revision Counsel. 29 USC 158 – Unfair Labor Practices
File an unfair labor practice charge with your nearest NLRB regional office. The form is on the NLRB’s website and there is no filing fee.10National Labor Relations Board. Investigate Charges Watch the deadline: the charge must be filed within six months of the conduct you’re challenging.2National Labor Relations Board. National Labor Relations Act This is why the certified mail receipts matter. If the union signed for your resignation on March 1 and unauthorized deductions are still hitting your paycheck in April, that receipt establishes both the violation and where the six-month clock started.