Missouri . Labor Relations . Updated April 2026

Missouri's Right-to-Work law prohibits compulsory union membership or dues.

Missouri operates under a right-to-work framework, meaning employees cannot be compelled to join a union or pay union dues as a condition of employment. This applies even if a collective bargaining agreement is in place, safeguarding individual worker choice regarding union affiliation.

Effective Date
August 28, 2017
Applies To
All Private Employers
Governing Statute
Mo. Rev. Stat. § 290.590
Active

Right-to-Work State Framework

Employees cannot be required to join a union or pay union dues as a condition of employment.

Prohibits mandatory union membership
Prohibits mandatory union dues
Always running

What those rules do as a Missouri shift is created.

Teambridge integrates Missouri's right-to-work provisions directly into its platform, ensuring that hiring and employment practices align with state law. This prevents inadvertent violations related to union affiliation requirements.

Block compulsory union clauses

Teambridge prevents the inclusion of any terms in employment agreements or offer letters that would require union membership or dues payment as a condition of employment in Missouri.

Avoid discriminatory hiring based on union status

Our system guides hiring managers away from inquiries or decisions based on an applicant's union affiliation or non-affiliation, ensuring fair employment practices in a right-to-work state.

Flag non-compliant CBA language

For employers with collective bargaining agreements (CBAs), Teambridge flags clauses that mandate union membership or financial support, prompting review to ensure alignment with Mo. Rev. Stat. § 290.590.

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The rule, plainly stated

Missouri's Right-to-Work law prohibits mandatory union affiliation.

Missouri's right-to-work statute, enacted in 2017, prohibits employers from requiring employees to join a labor organization or pay dues/fees to such an organization as a condition of employment. This law applies to both new hires and existing employees.

Mo. Rev. Stat. § 290.590 (2017)

1. No person shall be required as a condition or continuation of employment to: (1) Become or remain a member of a labor organization; (2) Pay any dues, fees, assessments, or other charges of any kind or amount to a labor organization; (3) Pay to any charity or third party an amount equivalent to any dues, fees, assessments, or other charges regularly required of members of a labor organization.

2. Any agreement, understanding, or practice, written or oral, express or implied, between any labor organization and employer which violates the rights of employees as guaranteed in subsection 1 of this section is hereby declared to be unlawful, null and void, and of no legal effect.

Impact on Collective Bargaining Agreements

Collective bargaining agreements (CBAs) in Missouri cannot contain clauses that mandate union membership or the payment of union dues or fees. Any such provisions are deemed unenforceable and void under state law. This means that even in workplaces with a union, employees retain the right to choose whether or not to join the union or contribute financially to it.

Enforcement and Penalties

Violations of Missouri's right-to-work law can lead to legal action. Employees who believe their rights have been infringed upon may pursue civil remedies. While the statute primarily focuses on protecting individual employees' freedom of association, employers found in violation could face injunctions and other court-ordered remedies to ensure compliance with the law.

On autopilot

Teambridge ensures Missouri right-to-work compliance from hire to payroll.

Teambridge's platform is engineered to automatically integrate Missouri's right-to-work framework into your operational workflows. From onboarding documentation to ongoing employment management, we eliminate the guesswork and mitigate compliance risks.

01 . Onboarding

Right-to-work attestation

During employee onboarding, Teambridge presents clear information regarding Missouri's right-to-work status and includes optional, legally compliant acknowledgments to ensure employees understand their rights regarding union membership.

02 . Document generation

Compliant employment agreements

All employment contracts, offer letters, and policy documents generated through Teambridge are vetted to exclude any language that could be interpreted as requiring union membership or dues payment for Missouri employees.

03 . Payroll processing

No unauthorized union deductions

Teambridge's payroll system prevents any automatic deductions for union dues or fees unless explicitly authorized by the employee through a separate, voluntary election, aligning with the "no compulsory payment" clause.

04 . Policy updates

Real-time regulatory adjustments

Should Missouri's right-to-work statutes evolve, Teambridge automatically updates its compliance logic and notifies administrators, ensuring your policies and practices remain current without manual intervention.

FAQ

People also ask.

What does "right-to-work" mean in Missouri?

In Missouri, "right-to-work" means that employees cannot be compelled to join a labor union or pay union dues as a condition of employment. This applies regardless of whether a collective bargaining agreement exists in the workplace.

When did Missouri become a right-to-work state?

Missouri's right-to-work law, Mo. Rev. Stat. § 290.590, became effective on August 28, 2017.

Can a union still exist in a right-to-work state like Missouri?

Yes, unions can and do exist in right-to-work states. The law only prohibits compulsory membership or dues payment. Employees in Missouri still have the right to organize, join a union, and collectively bargain, but they cannot be forced to do so.

What if an employer requires union membership in Missouri?

Any agreement, understanding, or practice that requires union membership or dues as a condition of employment in Missouri is unlawful, null, and void. Employees can pursue legal action if their rights under the right-to-work law are violated.

Does Missouri's right-to-work law affect federal labor laws?

Missouri's right-to-work law operates within the framework of federal labor laws, specifically the National Labor Relations Act (NLRA). Section 14(b) of the NLRA permits states to enact right-to-work laws, allowing state law to supersede federal law regarding union security agreements.

Are public sector employees covered by Missouri's right-to-work law?

Missouri's right-to-work law primarily applies to private sector employers. Specific rules regarding public sector unions and collective bargaining are generally governed by separate statutes.