Philippine Labor Law Glossary
Definition: A union security clause is a CBA provision that requires employees covered by its lawful terms to acquire or maintain union membership as a condition affecting continued employment.
What a Union Security Clause Means
Union security is a general term covering arrangements such as union shop and maintenance of membership. The precise obligation depends on the CBA language and the employee’s status when the agreement was signed.
Although the Labor Code permits lawful union-security arrangements, dismissal is not automatic merely because a union requests it. The employer and union must respect the CBA, statutory exceptions, good faith and procedural due process.
Core Legal Rules
- The clause must be found in a valid CBA and applied according to its actual language.
- Employees who were already members of another union when the CBA was signed are protected by the statutory exception stated in the Labor Code.
- The union must establish a valid ground under the clause and act in good faith.
- The employer should independently verify the union’s request and give the employee notice and a meaningful opportunity to respond before dismissal.
- Union-security enforcement cannot be used as a pretext for arbitrary discrimination or retaliation.
Evidence That May Matter
| Evidence | Why it matters |
|---|---|
| CBA union-security provision | Defines the membership obligation and covered employees. |
| Union membership and dues records | May establish membership status and alleged noncompliance. |
| Union demand for enforcement | Shows the ground and action requested from the employer. |
| Notices and employee response | Document procedural due process and disputed facts. |
| Union disciplinary records | May show whether expulsion or loss of good standing followed valid procedures. |
Why the Term Matters
A union-security clause can affect employment itself. Careful review is necessary because the CBA language, employee status, union process and employer due process all matter.
Practical Example
Hypothetical example: A CBA contains a maintenance-of-membership clause. Before acting on a union request to dismiss a member allegedly expelled for nonpayment of dues, the employer verifies the clause, obtains supporting records and gives the employee notice and a chance to contest the allegation.
Common Misunderstanding
Misunderstanding: A union’s request automatically requires immediate dismissal.
Correct approach: The clause must lawfully apply, the union’s ground must be valid, and the employer must observe due process and good-faith verification.
Sources and Legal Citations
- Book V — Labor Relations, Labor Code of the Philippines — Official source.
- Supreme Court: union-security arrangements — Official source.
Editorial Review and Legal-Review Status
Prepared by: LaborCode.ph Editorial Team
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Source verification: Official legal sources checked on August 6, 2026
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Disclaimer
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