VLSI KoreaTaiwan's First Semiconductor Strike Begins: Micron Taoyuan Starts 24-Hour Warning Strike — Taichung, the HBM Hub, Settled
Micron's Taoyuan union in Taiwan began a 24-hour warning strike at 9 a.m. on October 22 — the first strike in Taiwan's semiconductor industry. Taichung, the HBM hub, settled on a wage deal the day before. Why they split, and what it means for supply.
The bottom line first: the first strike in Taiwan's semiconductor industry has actually begun — but Micron Taiwan as a whole has not stopped. At 9:00 a.m. local time on October 22, 2026, the Taoyuan union began a 24-hour warning strike in front of the plant. The Taichung union — representing Micron's largest site and its HBM production hub — reached a deal with management on a large wage increase on the afternoon of October 21 and did not join the strike. Two plants that started from the same set of demands ended up in different places, and that split is the real story.
The 30-second summary
In an early-October vote, 1,994 of the Taoyuan union's 2,258 eligible members backed strike action — 88.3% of all eligible members and roughly 99% of those who voted. The union's core demands are a permanent profit-sharing scheme paying out 15% of operating profit, plus a one-time bonus equal to 83 months of pay. The company's package was in the 35–68 month range, combining salary, bonuses and stock. Taichung settled on a large wage increase on October 21; Taoyuan, which never received a concrete profit-sharing proposal, walked out. No production halt or shipment disruption has been confirmed so far. The action is a 24-hour warning strike, scheduled to end at 9:00 a.m. Taiwan time on October 23 (10:00 a.m. KST). Whether it is extended or followed by a second round is undecided.
Chase's Take — The essence here is not "a strike happened" but where it happened and where it did not. With Taichung, the HBM plant, settling, the immediate supply shock shrinks considerably. The open question is the profit-sharing formula: how far Taichung's wage deal sits from Taoyuan's demand for a permanent 15% of operating profit, and whether that gap narrows in the next round of talks.
Timeline: from failed mediation to the picket line
| When | What happened |
|---|---|
| September 2026 | Mediation between the Taoyuan union and management breaks down |
| Early October 2026 | Taoyuan vote: 1,994 of 2,258 eligible members in favor — strike mandate secured |
| Last week | President Lai Ching-te urges management to negotiate in good faith |
| October 21, 2026 | Labor Minister Hung Sun-han offers mediation support. The same afternoon, the Taichung union agrees to a large wage increase |
| October 22, 09:00 | Taoyuan union begins a 24-hour warning strike in front of the plant — the first strike in Taiwan's semiconductor industry |
| October 23, 09:00 | Warning strike scheduled to end (Taiwan time). Extension or further action undecided |
Why the split: Taichung settled, Taoyuan struck
The difference came down to what each side was negotiating over. Taichung's union found common ground on pay — an item that can be settled with a concrete number. Its October 21 agreement was described as a plan to raise wages substantially. Taoyuan, by contrast, held out for structure rather than a one-off payment: a permanent profit-sharing scheme paying 15% of operating profit, distributed quarterly from FY2027. Management never tabled a concrete version of that proposal for Taoyuan, and the union cited its absence as the reason for walking out.
Micron told Reuters it respects workers' legal rights and will negotiate in good faith with both the Taoyuan and Taichung unions to find a solution acceptable to everyone. Taipei is also stepping in: President Lai Ching-te urged good-faith bargaining last week, and Labor Minister Hung Sun-han offered mediation support on October 21.
Demands vs. company offer (summary)
| Item | Union demand | Company offer / status |
|---|---|---|
| One-time bonus | 83 months of pay | 35–68 month package (salary + bonuses + stock) |
| Profit sharing | 15% of operating profit, permanent, paid quarterly from FY2027 | No concrete proposal for Taoyuan. Taichung settled on a large wage increase instead |
| Benchmarks | Samsung Electronics: averted a strike in May 2026 with a special bonus equal to 10.5% of semiconductor-division operating profit. SK hynix: agreed last year to a 10%-of-operating-profit PS scheme with the cap abolished | |
For how these demands were built and how they compare with other semiconductor labor disputes, see our earlier explainer: Micron Taiwan Strike Demands Explained: The 15% Profit-Sharing Fight and the 2026 Semiconductor Strike Map
Production impact: nothing confirmed disrupted — duration is the risk
Facts first: no production halt or shipment disruption from this strike has been confirmed. As a 24-hour warning strike, its direct impact is limited. Micron employs about 15,000 people in Taiwan, has invested a cumulative NT$1.6 trillion (over USD 50 billion) there, and Taiwan accounts for more than 60% of Micron's total DRAM output, according to Nikkei Asia. At that scale, a prolonged dispute could tighten an already tight DRAM and HBM supply picture — the common warning from both Reuters and Nikkei Asia.
Fab time losses also propagate differently than in a conventional factory: the cost tends to surface as slower yield recovery and longer cycle times after restart, not just the hours lost. That said, this warning strike has been reported as a short action in front of the plant, and no line stoppage has been confirmed. This is not a stage to over-read.
📩 Following this story?
Get the follow-up analysis — earnings, reports and HBM supply — in your inbox daily at 10:30 KST. Subscribe free →
For reference, Micron shares fell 4.88% intraday in the US on October 22 — but that was a sector-wide sell-off day, with the SOX down more than 5%, so the decline cannot be attributed to the strike alone.
Why this matters beyond Taiwan: the profit-sharing formula crossed a border
The structure of this dispute is familiar to Korean readers. SK hynix agreed last year to pay 10% of operating profit as PS (profit sharing) and abolished the cap; Samsung Electronics avoided a strike this May with a special bonus equal to 10.5% of its semiconductor division's operating profit. The Micron Taiwan union's 15% demand uses those Korean formulas as its benchmark — and prices above them.
All three memory makers now face the same central labor question: how to split record profits. As AI demand pushes memory prices and earnings higher, distribution pressure is likely to recur in Korea, Taiwan and the US alike. The next signal is whether management returns with a concrete profit-sharing proposal after the Taoyuan warning strike ends.
Frequently asked questions
Q. How long will the Micron Taiwan strike last?
A. It is a 24-hour warning strike that began at 9:00 a.m. Taiwan time on October 22, 2026 and is scheduled to end at 9:00 a.m. on October 23. Whether it is extended or followed by further action is undecided.
Q. Will HBM production be disrupted?
A. No production halt or shipment disruption has been confirmed. The Taichung plant, Micron's HBM hub, settled on a wage increase on October 21 and did not join the strike.
Q. Why did Taichung and Taoyuan reach different outcomes?
A. Taichung settled on a large wage increase. Taoyuan never received a concrete proposal for its core demand — a permanent profit share of 15% of operating profit — and went on strike.
Q. Will this strike affect memory prices?
A. As a short warning strike, direct impact is limited. But Taiwan accounts for over 60% of Micron's DRAM output, so a prolonged dispute could further tighten already tight DRAM and HBM supply.
Sources: Reuters, Nikkei Asia, Seoul Economic Daily, PTS (as of October 22, 2026). This article is not investment advice.
📩 Missed today's analysis? Get tomorrow's in your inbox
Daily Silicon at 10:30 KST plus earnings and analyst-report breakdowns, first. Samsung Electronics, SK hynix, TSMC and HBM supply, read by practicing engineers. Join 300+ subscribers.
Subscribe free →
Free · No spam · Unsubscribe anytime
