G.R. No. 167050 ; June 1, 2011
SOCIAL SECURITY COMMISSION, Petitioner, vs. RIZAL POULTRY and LIVESTOCK ASSOCIATION, INC., BSD AGRO INDUSTRIAL DEVELOPMENT CORPORATION and BENJAMIN SAN DIEGO, Respondents.

FACTS

Alberto Angeles filed a petition before the Social Security Commission (SSC) to compel respondents (Rizal Poultry, BSD Agro, and Benjamin San Diego) to remit his Social Security System (SSS) contributions. Respondents moved to dismiss, citing prior rulings from the National Labor Relations Commission (NLRC) and the Court of Appeals in a separate illegal dismissal case filed by Angeles, which definitively held that no employer-employee relationship existed between Angeles and the respondents. The NLRC and the Court of Appeals based this finding on the conclusion that Angeles’s duties (carpentry, plumbing, painting, electrical works) were not integral to the respondents’ poultry business. That labor case attained finality with an entry of judgment on May 26, 2001.
The SSC denied the motion to dismiss, reasoning that NLRC decisions on the employer-employee relationship are not binding on the SSC and do not constitute res judicata, as the causes of action differ (illegal dismissal under the Labor Code vs. non-remittance of contributions under the SSS Law). The SSC also noted that the factual issue of employment was squarely alleged in the petition before it.
On respondents’ petition for certiorari, the Court of Appeals reversed the SSC. It applied the principle of res judicata, specifically the rule on “conclusiveness of judgment,” holding that the common pivotal issue—the existence of an employer-employee relationship—had already been conclusively settled in the final NLRC and Court of Appeals rulings. The appellate court ordered the dismissal of the SSC case. The SSC’s motion for reconsideration was denied, prompting this petition.

ISSUE

Whether the final decision of the NLRC and the Court of Appeals, finding no employer-employee relationship, constitutes res judicata (particularly under the rule on conclusiveness of judgment) so as to bar the relitigation of that same issue in the subsequent SSS coverage case before the Social Security Commission.

RULING

YES, the principle of res judicata, specifically conclusiveness of judgment, applies.
The Supreme Court affirmed the Court of Appeals’ decision. Res judicata has two aspects: (1) bar by prior judgment (requiring identity of parties, subject matter, and causes of action) and (2) conclusiveness of judgment (requiring only identity of parties and issues).
The Court found that the element of conclusiveness of judgment was present:
1. Final Judgment: The NLRC and Court of Appeals rulings were final and executory.
2. Jurisdiction: The labor tribunals had jurisdiction over the illegal dismissal case.
3. Judgment on the Merits: The finding of no employer-employee relationship was a central and necessary determination in resolving the illegal dismissal claim.
4. Identity of Parties and Issues: There was substantial identity of parties (Angeles vs. BSD Agro/San Diego; Rizal Poultry was treated as the same entity by Angeles in his pleadings). Crucially, the identical issue—the existence of an employer-employee relationship—was directly in controversy and was definitively adjudicated in the prior labor case.
The Court rejected the SSC’s argument that there was no identity of causes of action. For conclusiveness of judgment, identity of causes of action is not required; only identity of issues is necessary. Since the resolution of the SSS case depended entirely on a determination of the employer-employee relationship—an issue already conclusively settled between the parties—the SSC was precluded from re-examining it.
The Court distinguished the cited case of Smith Bell and Co. v. Court of Appeals and instead aligned its ruling with Spouses De Leon v. Social Security System, which held that a prior final judgment on the employer-employee relationship is binding in a subsequent SSS coverage case. Therefore, the Court of Appeals correctly ordered the dismissal of SSC Case No. 9-15225-01.