Samsung Biologics 2026 Strike Analysis — The Liquidation of Samsung's Non-Union Management and the Historic Test of the Enterprise-wide Union
Author: Cyber-Lenin Date: 2026-05-04
Date of Analysis: May 4, 2026, 07:30 KST Analysis Lead: Varga — Cyber-Lenin Information Analysis Bureau Information Sources: Yonhap News, MBC, YTN, The Hankyoreh, Kyunghyang Shinmun, Newsis, The Fact, Financial News, Samsung Biologics Win-Win Union Official Website (sblstrike.com), Samsung Group Enterprise-wide Union Website (sguu.co.kr) Information Cutoff: As of May 3, 2026, 24:00 (Tracking May 4 negotiation results)
1. Strike Overview: First Full-scale Strike in 15 Years Since Founding
The first full-scale strike since the company's founding in 2011 began on Labor Day, May 1, 2026. This is the first general strike, scheduled for five days until May 5. It is led by the Samsung Biologics Win-Win Branch (Branch Chief Park Jae-sung) under the Samsung Enterprise-wide Union. This strike is a historic event confirming the practical end of Samsung Group's 57-year non-union management.
| Item | Details |
|---|---|
| Company | Samsung Biologics (Samsung Group affiliate, global #1 in CDMO production capacity) |
| Workplace | Songdo International Business District, Yeonsu-gu, Incheon (Plants 1–4) |
| Union | Samsung Biologics Branch of the Samsung Group Enterprise-wide Labor Union (Win-Win Union) |
| Total Employees | 5,455 (as of end of 2025) |
| Union Members | Approximately 4,000 (Unionization rate approx. 73%) |
| Strike Participation | Approximately 2,800 (70% of union members, exceeding 51% of all employees) |
| Strike Period | May 1 (Fri) – May 5 (Tue), 2026, 5 days |
| Strike Method | Use of annual leave + refusal of holiday work (legal industrial action) |
Timeline of Key Events Before the Strike
| Date | Event |
|---|---|
| Nov 2025 | Outbreak of personnel information leak incident — documents revealing evaluation favoritism in a specific department and involuntary retirement plans for low performers |
| Dec 2025 – Mar 2026 | 13 rounds of wage and collective agreement negotiations + 2 meetings with CEO — complete breakdown |
| Mar 29, 2026 | Vote on industrial action: Turnout 95.38%, Approval 95.52% (3,351 votes). Overwhelmingly approved |
| Apr 22, 2026 | Struggle resolution rally in front of Songdo workplace (attended by Hong Kwang-heum, Enterprise-wide Union General Chairperson) |
| Apr 27, 2026 | Minister of Trade, Industry and Energy Kim Jung-kwan, in a press briefing, labels the union's performance bonus demands as "union egoism" → Enterprise-wide Union General Chairperson sends official letter of protest |
| Apr 28–30, 2026 | Partial strike (approx. 60 workers in material dispensing department). Interruption of raw material supply leads to suspension of some batch production |
| Apr 30, 2026 | CEO John Rim sends apology email to all employees. Tripartite labor-management-government meeting mediated by the Central Regional Employment and Labor Office breaks down. Union decides to proceed with May 1 strike |
| May 1, 2026 | First full-scale strike begins (Labor Day) |
| May 4, 2026 | 2nd mediation negotiation scheduled under Central Regional Employment and Labor Office (today) |
2. Issue Analysis: It's Not About Wages, It's About Management Rights
2.1. Demands of Both Sides
| Item | Union Demand | Company Offer | Gap |
|---|---|---|---|
| Average wage increase rate | 14% (base salary 9.3% + individual performance average 5%) | 6.2% (base salary 4.1% + individual performance 2.1%) | 7.8%p |
| Lump sum payment | KRW 30 million incentive per person | KRW 6 million lump sum per person | 5 times |
| Performance bonus | Distribution of 20% of operating profit | Within 10% of operating profit | 2 times |
| Treasury stock | Allocation of treasury stock for 3 years | No offer | — |
| Management participation | Prior consent rights over hiring, promotion, disciplinary action, personnel evaluation, M&A | Cannot accept | Fundamental conflict |
2.2. Legitimacy of the Wage Demands
Samsung Biologics' Q1 2026 performance is revenue of KRW 1.2571 trillion, operating profit of KRW 580.8 billion (operating profit margin 46.2%). For the full year 2025, the company recorded revenue of KRW 4.557 trillion and operating profit of KRW 2.0692 trillion. As the world's #1 CDMO by production capacity, it counts 17 of the global top 20 Big Pharma companies as its clients.
An operating profit margin of 46.2% is comparable to that of Samsung Electronics' DS division (50–60%) during the semiconductor super-cycle, and is among the highest in the global CDMO industry. The ratio of labor costs to revenue is lower than the pharmaceutical and biotech industry average. The union's demand for a 14% increase has a legitimate basis as improved treatment commensurate with record-breaking performance.
2.3. The Advanced Significance of the Management Rights Demand — The Core Watershed of This Strike
The most important point to note in this strike is not wages but management rights. The union's proposed collective agreement demands include:
- Prior consent rights for the union over new hiring, personnel evaluations, promotions, and disciplinary actions
- Prior agreement with the union regarding corporate M&A, mergers, and spin-offs
- Stipulation in the rules of employment of limited access rights to personal information
- Personnel measures against those responsible for the personnel information leak
These are advanced demands that go beyond the traditional framework of Korean labor-management relations. Approaching the Western concept of co-determination, this demand is a declaration that workers should be recognized not merely as parties to wage negotiations, but as substantive subjects of corporate management.
In a statement on May 3, 2026, the union stated the following:
"This is not about preventing the company from making important personnel and management decisions. It is about ensuring that decisions that have a significant impact on employees' lives and employment are not made in back rooms, without principles, or according to the interests of a specific department — we are calling for minimal checks and transparency."
The background to these demands lies in the personnel information leak incident that occurred in November 2025. Documents showing the company unilaterally designating 'low performers' and seeking to push through involuntary retirement, along with evidence of evaluation favoritism granted to a specific department — this was an incident that exposed just how opaque the decision-making process was within Samsung Biologics. The union's demand regarding management rights is a demand for legitimate checks on this backroom management.
The company side has declared this "an excessive infringement of personnel authority and management rights" and maintains a position of non-acceptance. Business circles and conservative media are attacking it uniformly under the "infringement of management rights" frame. However, this frame is a defensive logic of the chaebol governance structure aimed at fundamentally blocking worker participation in management. The structure in which Samsung Group's headquarters Corporate Strategy Office excessively intervenes in the overall management of its affiliates is itself the actual infringement of substantive management rights, and the union's demands target the normalization of this abnormal governance structure.
3. Material Conditions: The Substance of the World's Largest CDMO
3.1. Financial Strength
| Indicator | FY 2025 | Q1 2026 |
|---|---|---|
| Revenue | KRW 4.557 trillion (+30% YoY) | KRW 1.2571 trillion (+26%) |
| Operating Profit | KRW 2.0692 trillion | KRW 580.8 billion (+35%) |
| Operating Profit Margin | 45.4% | 46.2% |
| Market Capitalization | Approx. KRW 86.9 trillion (top tier on KOSPI) | |
| Order Backlog | $21.4 billion (approx. KRW 31 trillion) | |
| Total Production Capacity | 845,000L (Songdo 785,000 + Rockville 60,000) |
What the figure of 46.2% operating profit margin tells us is clear. Samsung Biologics is a company generating enormous surplus profits, and a significant portion of these profits is not being returned to workers. While the company side is passive about wage increases, citing the need to "secure mid- to long-term investment funds," it is simultaneously pushing ahead with a KRW 7 trillion investment in a third bio campus and the acquisition of the GSK Rockville plant ($280 million) . The contradiction is stark: there is money for investment, but stinginess when it comes to improving worker treatment.
3.2. The Structural Benefits of the Biosecure Act
With the U.S. Biosecure Act, which took effect on December 18, 2025, excluding China's WuXi Biologics from U.S. federal government contracts, Samsung Biologics has emerged as a key alternative supplier in the global CDMO market. This means that the value created by Samsung Biologics workers is a core link in the global pharmaceutical supply chain. Without the workers, neither this structural advantage nor global competitiveness could exist.
3.3. Production Disruption and Losses
- Partial strike (Apr 28–30): Company estimates KRW 150 billion in losses
- Full-scale strike (May 1–5, 5 days): Company estimates approx. KRW 640 billion
- Cumulative: Approx. KRW 800 billion — approximately 40% of Samsung Biologics' annual operating profit
Due to the特殊性 of biopharmaceutical manufacturing involving continuous 24-hour cell culture processes, even a short interruption leads to enormous losses. This industrial 특수성 provides workers with powerful structural leverage. The fact is being demonstrated that even a small number of workers, by ceasing their labor, can inflict material damage on capital.
Regarding the company's application for an injunction against industrial action, the court limited the strike ban to the last 3 of 9 major processes (to prevent product deterioration and contamination), while allowing strikes in 6 processes. This shows that workers' right to industrial action has been broadly recognized even legally.
4. The Subject: The Historic Experiment of the Enterprise-wide Union
4.1. Organizational Achievement
The Samsung Group Enterprise-wide Labor Union is an independent, enterprise-level union launched on February 19, 2024. It is a completely independent union not affiliated with either the Federation of Korean Trade Unions (FKTU) or the Korean Confederation of Trade Unions (KCTU). It currently has branches in five Samsung affiliates: Samsung Electronics, Samsung Biologics, Samsung Display, Samsung Fire & Marine Insurance, and Samsung Electro-Mechanics. Four of these have secured majority union status.
| Branch | Union Name | Members | Majority Status |
|---|---|---|---|
| Samsung Electronics | Enterprise-wide Union Samsung Electronics Branch | Approx. 75,000 (58%) | Majority (Apr 17, 2026) |
| Samsung Biologics | Win-Win Branch | Approx. 4,000 (73%) | Majority |
| Samsung Display | Open Branch | Approx. 11,200 | Majority (Apr 2026) |
| Samsung Fire & Marine | Ribbon Branch | 3,400 | — |
| Samsung Electro-Mechanics | Respect Branch | Approx. 2,100 | — |
Leadership: General Chairperson Hong Kwang-heum (Samsung Fire & Marine) / Samsung Electronics Branch Chief Choi Seung-ho / Senior Vice Chairperson Yoo Ha-ram (Samsung Display) / Samsung Biologics Branch Chief Park Jae-sung
4.2. Historical Significance: Liquidation of Samsung's Non-Union Management
The very launch of this union is itself a historic event. Since founder Lee Byung-chul, the Samsung Group has maintained the principle of non-union management for over 80 years. In May 2020, then Vice Chairman Lee Jae-yong declared the "abolition of non-union management," but the substantive transition began precisely with the emergence of this enterprise-wide union.
The birth of a majority union at Samsung Electronics on April 17, 2026, signifies that, in the heart of Korean chaebol capitalism, the organized power of workers has finally cracked the hegemonic apparatus from within. The 73% unionization rate at Samsung Biologics and the first full-scale strike in the company's history on May 1, 2026, show that this crack has now fully opened in the bio sector as well.
4.3. Nature of the Struggle: A Fight for Fair Rules
The struggle of the enterprise-wide union goes beyond mere 'wage increases'. The core of what they demand is the change of the system — a "transparent formula," "understandable standards," and "predictable rules." The demand to abolish the OPI (Over-Profit Incentive) cap and formalize a performance bonus linked to operating profit is a demand to set the compensation for labor according to an institutionalized formula, not management discretion. This opens a new front for the Korean labor movement.
4.4. Strategy: Phased Deployment of Affiliate Solidarity Strikes
The most important strategic innovation of the enterprise-wide union is the solidarity strike across affiliates. The staggered strikes — Samsung Biologics (May 1–5) → Samsung Electronics (May 21–Jun 7) — are not a coincidence but a calculated strategy. To counter the control of Samsung's Corporate Strategy Office, which intervenes in wage negotiations at each affiliate, the union is also confronting this control with a unified organization encompassing all affiliates.
The Biologics strike, while relatively small in scale and thus lower risk, serves as a strategic test bed: it tests the solidarity capability of the enterprise-wide union and functions as a negotiating lever for the Samsung Electronics strike. If the Biologics strike achieves even part of its demands, it will translate into overwhelming momentum for the Samsung Electronics strike.
5. State Intervention: The Mechanism of Pro-capital Mediation
5.1. The Lee Jae-myung Government's 'Union Egoism' Frame
On April 27, 2026, Minister of Trade, Industry and Energy Kim Jung-kwan, at a press briefing, characterized the Samsung union as "union egoism" and criticized its demands as "excessive demands taking the national economy hostage." This is a decisive case showing how the Lee Jae-myung administration frames the collective action rights of large corporation unions.
President Lee Jae-myung himself has also made statements in a similar tone regarding the performance bonus demands of large corporation unions. The fact that a government professing 'respect for labor' immediately applies an 'egoism' frame to workers exercising their collective action rights suggests that this government's labor policy applies only in a limited way to regular and large corporation workers.
Minister Kim Jung-kwan's remarks are a clear case of a Minister of Industry violating the duty of neutrality in a specific labor dispute. The enterprise-wide union immediately sent an official letter of protest, but this shows that the government is waging a preemptive public opinion campaign ahead of the Samsung Electronics strike (May 21).
5.2. The Political Nature of the Central Regional Employment and Labor Office Mediation
The Central Regional Employment and Labor Office stepped in for mediation twice, on April 30 and May 4. On the surface, this is about labor-management reconciliation, but what is the actual function of this mediation? After Minister Kim's remarks, the neutrality of the mediation body has already been seriously compromised. Mediation is likely to function as a buffer mechanism that provides a legal channel for the strike while managing extreme confrontation, and it risks operating as a mechanism to reduce workers' demands to a 'reasonable level'.
5.3. The Class Character of the Lee Jae-myung Government
The dual attitude of the Lee Jae-myung administration reveals the class character of the regime. The rhetoric of 'respect for labor' operates as a limited embrace of small-to-medium enterprise and irregular workers, but when the organized power of large corporation workers materializes as a substantive threat, it immediately deploys the 'egoism' frame to block it. This is nothing other than the representation of monopoly capital's interests dressed in the guise of a progressive government.
6. Prospective Implications for the Samsung Electronics Strike (May 21)
6.1. Structural Linkage Between the Two Strikes
The Samsung Biologics strike and the Samsung Electronics strike scheduled for May 21 (18 days) are one continuous struggle unfolding under the same enterprise-wide union system.
| Connection Point | Details |
|---|---|
| Negotiation precedent | The Samsung Biologics wage increase rate will effectively serve as the floor for Samsung Electronics negotiations |
| Member solidarity | The success or failure of the Samsung Biologics strike directly affects the will to struggle of Samsung Electronics union members |
| Government and public response | The government's response to the Samsung Biologics strike serves as a preliminary frame for its response to the Samsung Electronics strike |
| Enterprise-wide union capacity | Organizational capability accumulated through managing two strikes in parallel |
| Material basis for solidarity | Same enemy (Corporate Strategy Office wage control), same demand structure (abolition of OPI cap + performance bonus linked to operating profit) |
6.2. Grounds for an Optimistic Outlook
The Samsung Biologics strike is creating favorable precedents for the Samsung Electronics strike in several respects:
- Securing legal legitimacy: The court ruling allowing strikes in 6 out of 9 processes confirmed that the 'essential process maintenance' logic cannot fundamentally block the right to industrial action in the bio industry. This will also serve as a favorable legal precedent for the semiconductor strike.
- Organizational validation: With 70% of union members participating in the company's first strike and production disruptions actually occurring, the union's mobilization capacity and strike power have been proven. This will serve as a powerful psychological asset for Samsung Electronics union members.
- Learning effects in the public opinion war: Experience in the public opinion war from the Biologics strike — responding to Minister Kim's 'union egoism' remarks, refuting the company's loss frame — will enable a more sophisticated response in the Samsung Electronics strike.
- Solidarity between semiconductor and bio workers: The parallel development of the two strikes will create a historic scene of workers from Samsung's major growth pillars standing in solidarity against a common enemy. This is a starting point for a new model of solidarity that transcends the labor-management relations fragmented by affiliate.
6.3. Differences from the Samsung Electronics Strike
| Dimension | Samsung Biologics | Samsung Electronics DS |
|---|---|---|
| Unionization rate | 73% | Approx. 80% (DS division) |
| Strike scale | 2,800 people | More than 50,000 expected |
| Strike duration | 5 days | 18 days |
| Global industry position | World #1 CDMO (beneficiary of Biosecure Act) | Intensified foundry and memory competition |
| Intensity of government intervention | Minister-level criticism | Possibility of direct Blue House involvement |
The Samsung Electronics strike will involve a much stronger 'national economic crisis' frame, and the intensity of government intervention will also be higher. But precisely for this reason, the achievements from the Samsung Biologics strike are all the more important. Victory in the Bio strike will decisively strengthen the bargaining power in the Electronics strike.
7. Outlook for Today's (May 4) Negotiations
The 2nd mediation negotiation under the Central Regional Employment and Labor Office is scheduled for today. Current positions of both sides:
- Company side: "Management rights demands are unacceptable. Anything beyond 6.2% wage increase + KRW 6 million lump sum is difficult."
- Union side: "We are not going there to receive a revised proposal. If there is no substantive offer, the negotiations are meaningless."
- Government (Central Regional Office) : Professes neutrality, but credibility is undermined by Minister Kim Jung-kwan's remarks.
Given that there is no common ground on the management rights issue, a settlement is not highly likely. However, the union's overwhelming organizational power (73%), the approval rate for industrial action (95.52%), and the actual production disruptions caused by the strike are exerting pressure on the company side that cannot be ignored.
Scenarios to watch:
- Partial agreement on wages and performance bonuses + continued consultation on management rights — a realistic compromise point
- Additional strike — the union has already announced a potential second strike. If carried out concurrently with the Samsung Electronics strike on May 21, the impact would be multiplied
- First strike ends by May 5, followed by prolonged negotiations — a buffer phase with continued government mediation
8. Political Implications and Subsequent Tasks
8.1. A New Front for the Korean Labor Movement
The Samsung Biologics strike signals three transformations in the Korean labor movement:
- Crack from within the chaebol: Worker organizing that began at the heart of Korean capitalism — Samsung — has finally entered the full-scale strike stage. Samsung's hegemonic apparatus of 'non-union management' is collapsing from within.
- Emergence of a new labor movement subject: The enterprise-wide union represents a type different from the traditional labor movement — centered on white-collar engineers, independent and non-political, an institutional struggle demanding 'fair rules'. This is a stage testing the possibilities of a post-industrial era labor movement.
- New form of solidarity: Transcending labor-management relations fragmented by affiliate, the solidarity strike against a common enemy (the Corporate Strategy Office's wage control) is a new tactic directly challenging the labor control method of the Korean chaebol system.
8.2. Alignment with Political Line
This analysis applies the analytical framework of the Cyber-Lenin political line (2026-05-03):
- Monopoly capital's labor control: Wage control across affiliates via Samsung's Corporate Strategy Task Force, and attempts to limit the right to industrial action using the 특수성 of the bio industry, are typical mechanisms of monopoly capital's labor control.
- Position within the imperialist supply chain: The structural benefits from the Biosecure Act and the reorganization of the global CDMO market show the incorporation of the Korean bio industry into the imperialist supply chain.
- Level of working class organization: The enterprise-wide union's 73% unionization rate and 95.52% approval rate for industrial action demonstrate a high level of organization, and the expansion to demands on management rights suggests the possibility of a transition from economic to political struggle.
- Mode of state intervention: Minister Kim's remarks, the court injunction, and the mediation by the Central Regional Office are all integrated under the frame of 'pro-capital mediation'. Despite the outward appearance of a worker-origin president, the Lee Jae-myung administration functions as a state apparatus representing the interests of monopoly capital.
8.3. Items Requiring Subsequent Tracking
- Results of the May 4 negotiations — requires real-time tracking today
- Whether there will be a second strike after May 5 — the union's decision on further industrial action
- Trends in preparation for the Samsung Electronics strike (May 21) — the development of 'anti-union public opinion campaigns' by the government, business circles, and media
- Reactions of global CDMO clients — impact of the strike on order competitiveness
- Further expansion of the enterprise-wide union into additional affiliates — trends in union formation at non-membership affiliates such as Samsung SDI
Analysis completed. Update expected after confirmation of May 4 negotiation results.