Worker Dispatch vs Subcontracting in South Korea

1. Why Did Two Same-Day Rulings Split the Outcome in South Korea?

Both rulings addressed whether in-house subcontracted workers at the same steel mill were in fact in a worker-dispatch relationship with the principal Y1 under the Act on the Protection of Dispatched Workers (the “Dispatch Act”). A finding of dispatch in violation of that statute triggers deemed direct employment or a direct employment obligation, with substantial retroactive and remedial consequences in South Korea.

The Eight-Plaintiff Case — Decision 2022Da225606

Eight plaintiffs split into two functional groups. Seven (X1 through X7) performed cold-rolled product packaging for subcontractor A. One (X8) performed factory operations for subcontractor B. The Gwangju High Court recognized dispatch for all eight; the Supreme Court of Korea reversed as to the seven packaging workers and affirmed as to the factory worker.

The 215-Plaintiff Case — Decision 2022Da225590

This was a large-scale claim involving 215 plaintiffs across four functional groups: (i) vessel berthing, raw material unloading, and transport (subcontractors C and D); (ii) ladle management, slab correction, and coil grinding (subcontractor E); (iii) roll maintenance, in/out handling, and grinding (subcontractor F); and (iv) blended raw material (pellet) production, transport, and processing (subcontractor G). The Supreme Court of Korea affirmed dispatch findings across all functions. Separately, the Court dismissed one plaintiff’s claim on its own motion after that plaintiff reached retirement age during the appeal.

2. What Does the Five-Factor Dispatch Test Look Like in South Korea?

The Supreme Court of Korea invoked identical governing law in both rulings: the substance-over-form five-factor test established in Decision 2010Da106436 (February 26, 2015). Contract labels — “service contract,” “outsourcing agreement,” “subcontract” — do not control. The question is whether the actual working relationship carries the hallmarks of dispatch.

No single factor is dispositive. The Court weighs the totality of the working relationship, and the factors interact — evidence that bolsters the subcontractor’s specialization also often weakens the inference that principal-supplied work standards amount to binding supervision.

3. Why Was Packaging Work Held Not to Be Dispatch in South Korea?

In Decision 2022Da225606, the Supreme Court of Korea reversed the High Court’s dispatch finding for cold-rolled product packaging and remanded for further proceedings. The reasoning reflects a close examination of the subcontractor’s actual capabilities.

A. Work Standards Reflected the Subcontractor’s Expertise

While Y1 was involved in the drafting and revision of packaging work standards and specifications, subcontractor A had performed packaging since 1976, installed and operated packaging facilities at Y1’s steel mill since the late 1980s, and filed patents on packaging equipment from around 2004 — during the disputed period itself. A also proposed improvements to packaging specifications. The Court concluded that A possessed independent experience and technology in the actual execution of packaging work, and that A’s know-how was likely substantively reflected in the work standards. On those facts, the principal’s provision of work standards could not be categorically treated as binding supervisory direction.

B. No Substantive Integration — Buffer and Functional Distinction

Packaging lines had sizable upstream coil yards, and A’s workers could manually adjust the coil transfer conveyor. That configuration gave A meaningful discretion over work volume and pace. Equally important, Y1’s employees handled coil quality verification and remediation decisions, while A’s workers checked only external appearance during packaging execution. The functions were distinguishable and not mutually substitutable — factors cutting against substantive integration into Y1’s operations.

C. Autonomy Over Working Conditions

The work specifications included standard headcounts, and the contract fee was calculated accordingly. But because A’s expertise was substantively reflected in the work standards, the Court refused to treat the standard-headcount figure as evidence that Y1 exercised general control over A’s workforce-related conditions. A independently determined shift composition and other day-to-day workforce decisions.

D. Genuine Technical Specialization

A’s scope was limited to packaging, and A had registered and filed multiple patents on packaging equipment. The Court treated the combination of limited functional scope and intellectual property ownership as evidence of genuine specialization.

E. Independent Business Organization

A had been listed on the KOSDAQ market since 1997, with revenues exceeding KRW 100 billion. A substantial portion of the packaging equipment at Y1’s steel mill was owned, sold, or installed by A itself. Those facts supported the inference that A maintained the independent organization and facilities required to perform the contract on its own account.

F. Factory Operations (X8) — Opposite Result in the Same Case

The same ruling affirmed the dispatch finding for X8, who performed factory operations for subcontractor B. The Court found no error in the High Court’s reasoning. That intra-case split underscores that outcomes are function-specific even when the principal, the legal test, and the appellate panel are identical.

4. Why Were Raw Material and Processing Functions Held to Be Dispatch in South Korea?

In Decision 2022Da225590, the Supreme Court of Korea affirmed dispatch findings across four functional groups. The reasoning reflects the inverse of the factors that protected the packaging subcontractor.

A. Principal-Driven Work Standards and Real-Time Directions

Subcontractors C, D, E, and F prepared their work standards by substantially replicating Y1’s pre-existing standards, then submitted them to Y1 for suitability review. Y1 used electronic management systems and email to issue frequent instructions on work targets, methods, and sequencing, including directives to prioritize specific tasks or apply specific methods. Unlike the packaging subcontractor, these subcontractors did not contribute independent know-how back into the standards.

B. Tight Coupling With the Principal’s Production Process

Raw material unloading by C and D was integral to Y1’s production and procurement planning; disruption there disrupted Y1’s entire steel production. E’s ladle management immediately preceded Y1’s continuous casting process, and slab correction and coil grinding were essential stages around the rolling process. F’s roll functions were tightly interlocked with the rolling process. These tight operational couplings evidenced substantive integration into Y1’s operations.

C. Routine Work, Principal-Led Problem Solving

The work was characterized as routine and repetitive, without meaningful specialization or technical barriers. When problems arose, Y1 — not the subcontractor — analyzed root causes and directed specific remediation. That pattern reversed the autonomy inference present in the packaging case.

D. Headcount-Based Compensation and Workforce Intervention

Compensation was calculated primarily on Y1-set standard headcounts. The most striking evidence came from blended raw material subcontractor G: compensation was based on headcount and working hours rather than completed output, and Y1 communicated workforce reduction plans that G then implemented by dismissing employees. That sequence demonstrated principal control over workforce size and conditions — a decisive indicator of dispatch.

E. Principal-Owned Core Facilities

Subcontractor C owned some conveyor belts but not enough to operate as an independent business. Core facilities required for the subcontractors’ work — including those used by G — were owned by Y1. Without independent organization and facilities, the fifth factor tipped decisively against legitimate subcontracting.

5. How Do the Two Rulings Compare Factor by Factor?

Side-by-side, the two rulings map onto the five-factor test with striking clarity:

The practical takeaway: Factor 4 (specialization) and Factor 5 (independent organization) anchor the analysis. Strong evidence on those factors reshapes how Factor 1 (supervision) is interpreted. A subcontractor with genuine know-how, intellectual property, and an independent operational footprint can absorb principal-provided work standards without those standards being reclassified as binding dispatch-style direction.

6. What Should Principals in South Korea Audit Now?

For principals operating in-house subcontracting arrangements in South Korea, the two rulings point to concrete audit priorities. Because the Supreme Court of Korea has consistently emphasized substance over contract labels, remediation must address operational structure rather than contract drafting alone.

A. Work-Standards Governance

• Does the subcontractor contribute documented expertise, feedback, or improvement proposals to the work standards, with meeting minutes or approval records to evidence it?
• Is the process one of principal drafting and subcontractor implementation, or subcontractor drafting and principal suitability review?
• Do electronic systems and messaging go beyond information exchange to prescribe specific work methods and sequencing?

B. Functional Distinction and Operational Buffer

• Are subcontracted and direct workforces clearly segregated in organizational charts and actual workflows?
• Do subcontracted workers and principal employees perform mutually substitutable work in practice?
• Does the subcontractor have the infrastructure to independently adjust work volume and pace — buffers, manually controlled transfer equipment, autonomous scheduling?

C. Subcontractor Independence

• Does the subcontractor hold patents or other intellectual property relevant to the contracted work?
• Does the subcontractor own core equipment necessary for the work, or merely use the principal’s facilities?
• Does the subcontractor’s revenue, workforce, and client portfolio support a finding of independent business activity — listed status, multiple clients, in-house R&D?
• Does the subcontractor autonomously manage shift composition, worker selection, and training?

D. Compensation Architecture

• Is compensation tied to completed output or to deployed headcount and hours?
• Has the principal historically initiated workforce reduction plans that the subcontractor then implemented — the decisive vulnerability in the blended raw material case?
• Are standard-headcount figures genuinely a reference for fee calculation, or do they operate as de facto workforce controls?

Where audits reveal weaknesses, principals in South Korea should remediate operational structure alongside contract documentation. Judicial review of dispatch claims is resistant to surface-level contract revisions; only substantive realignment of work-standards governance, functional distinction, and independent organization meaningfully reduces risk.

7. What Happens When a Plaintiff’s Retirement Age Is Reached During a South Korean Appeal?

Decision 2022Da225590 also contains a procedural holding that matters for litigation strategy in long-running dispatch cases in South Korea.

A. Declaratory Interest Doctrine

Under the Supreme Court of Korea’s established doctrine, a declaratory action requires a present anxiety or risk affecting the party’s rights or legal status, and a declaratory judgment must be the most effective means of eliminating that anxiety or risk. See Decision 91Da1264 (October 11, 1991) and Decision 2016Da40439 (July 28, 2022).

B. Effect of Reaching Retirement Age

Y1’s work rules set retirement at age 60, with retirement effective at year-end. During the pending appeal, one plaintiff — a deemed-direct-employment candidate — reached retirement age on December 31, 2023. The Supreme Court of Korea held that restoration of employee status had become impossible, and that a declaration of employee status could no longer serve as the most effective remedy. That portion of the claim was dismissed.

C. Strategic Implication for Plaintiffs in South Korea

Plaintiffs in dispatch-recognition cases in South Korea should plead monetary claims — unpaid wages, damages — jointly with the declaratory claim. Long appellate timelines expose older plaintiffs to the declaratory-interest risk addressed in Decision 2022Da225590. Joint pleading preserves the opportunity for monetary recovery even when declaratory relief later becomes unavailable.

8. FAQ — In-House Subcontracting and Worker Dispatch in South Korea

Atlas Legal is a corporate law firm based in Incheon Songdo, South Korea, with advisory and litigation experience in in-house subcontracting structures, Dispatch Act compliance audits, and worker-status confirmation litigation for manufacturing and heavy industry clients in South Korea. The April 16, 2026 rulings of the Supreme Court of Korea reaffirm that function-level operational substance — not contract wording — determines dispatch outcomes, and principals operating in South Korea should audit their arrangements accordingly.

Disclaimer: This article provides general legal information about South Korean labor law and is not legal advice. Outcomes depend on the specific facts of each matter. The analysis draws on the published Supreme Court of Korea Decisions 2022Da225606 and 2022Da225590 and the underlying Gwangju High Court judgments 2019Na21025 and 2021Na21332. For matter-specific advice in South Korea, please consult an attorney.