Laid off from onsemi.

What onsemi layoffs have meant for employees

onsemi's recent rounds have arrived as worldwide numbers. When 2024 ended, the company counted nearly 26,400 people working full time across 33 countries, Reuters reported, and the plan it began in February 2025 called for about 2,400 layoffs across all its business divisions, roughly 9 percent of that full-time headcount. The January 2026 plan was framed the same way in the second-quarter 10-Q, as a further reduction of the global workforce, and the most recent layoffs on record, which Eurofound logged in May 2026, were announced at its plant in the Czech Republic. If you're working out whether your own job is part of a round, a state layoff notice or a local report that names your site tells you more than the company-wide count does.

Several times onsemi has left a fab by selling it. In 2022 it sold wafer fabs in Belgium, South Portland, Pocatello and Japan, its 2022 10-K shows, and signed wafer supply agreements with the buyers, LA Semiconductor in Pocatello among them. At South Portland the buyer, Diodes, said all workers would be offered jobs and that no relocations were planned, Mainebiz reported, and onsemi's chief executive said the transactions "provide employees at the affected fabs with continued employment" while letting onsemi move production from those fabs to its other manufacturing sites. If your plant is being sold and you're offered a job by the buyer, it's worth comparing that offer's pay, benefits and treatment of your years of service with whatever leaving onsemi would bring. The newest case is Mountain Top. Under a sale Evertiq reported in July 2026 as set to close near the end of 2027 or the start of 2028 if CFIUS signed off, Silex planned to offer employment to the people working at the plant.

South Portland also shows where that stops. onsemi had been there since 2016, when it took over the plant with Fairchild Semiconductor. The plant went to Diodes, but onsemi kept its offices on Running Hill Road, and the jobs there ended when it closed them in 2024. A spokesperson told Mainebiz the company had offered relocation where possible, and relocation was part of the 2024 consolidation, though the 2025 10-K counts it for far fewer people than the layoffs. If you're offered a transfer, the site, the role and the date you'd start are the terms that decide whether it's worth more than a search closer to home. For anyone let go in Maine, Maine unemployment benefits sets out the state's claim process.

The same consolidation made staying part of the deal for some people. Certain employees given notice had to work through a retention period before their severance came due, the 10-K notes, and onsemi booked the expense across that service period, which makes the last day a condition of the payment for the people it covered. If your severance depends on staying through a date, leaving early for another job can cost you that payment, so the required service date and a new job's proposed start are the two dates to line up, with the severance amount riding on any gap between them.

For onsemi's San Jose sites, the matching state page is California unemployment benefits; for the Scottsdale headquarters it's Arizona unemployment benefits; and for the Mountain Top fab Silex agreed to buy, it's Pennsylvania unemployment benefits. For Pocatello, Idaho, it's Idaho unemployment benefits.

A sourced history of onsemi layoffs

• May 2026, 200 layoffs announced at Rožnov, Czech Republic

  onsemi's Czech unit announced on May 20, according to Eurofound, that it would lay off 200 people at its Rožnov pod Radhoštěm plant, about 12 percent of the roughly 1,700 there, in a restructuring tied to silicon carbide chip production.

• January 2026, about 650 more jobs in a manufacturing realignment

  Under its 2026 Manufacturing Realignment Program, onsemi began a plan to cut about 650 more jobs worldwide, a plan the second-quarter 10-Q says had let about 600 people go by July 3, with about $25 million in severance costs expected that year.

• March 2025, San Jose layoff notice

  onsemi set 51 permanent layoffs at its 150 Rose Orchard Way site in San Jose for May 11, 2025, in a notice dated March 12 that appears in California's WARN report and in our WARN tracker.

• February 2025, company-wide plan to cut about 2,400 jobs

  onsemi began a plan on February 24, 2025 to cut about 2,400 jobs worldwide, and its 2025 10-K records about $64.4 million paid to the people let go by December 31, 2025.

• June 2024, nine-site consolidation and South Portland offices closing

  onsemi set out on June 13, in a plan its 8-K describes, to consolidate nine sites, cut about 1,000 jobs and reassign about 300 more people or ask them to relocate. Its South Portland offices were among the closings, Mainebiz reported, with 53 Maine jobs on a state filing.

• 2023, about 1,900 jobs in a Business Realignment

  onsemi announced about 1,900 job eliminations during 2023, in part to consolidate manufacturing into fewer sites under its Fab Right strategy; onsemi's 2025 10-K says AMG ended design and test work in certain locations and selected IT functions went to strategic service providers.

• September 2022, wind-down of the Quantenna-linked QCS division

  onsemi approved winding down a division on September 16, 2022 that its 8-K said was generally associated with its legacy Quantenna business, and the 2022 10-K calls it the QCS wind-down, with about 330 employees notified that quarter.

• 2021, Involuntary Separation Program of about 960 people

  Under its 2021 Involuntary Separation Program, onsemi notified about 960 employees of their termination, its 2022 10-K records, at a cost of $65.3 million in severance and other charges.

What to do if you're laid off from onsemi

• File for unemployment in the state where you worked. Benefits run from your filing date, and severance usually doesn't block you. onsemi's biggest hubs: California, Arizona, Maine, Idaho. Somewhere else? Every state is here.
• Apply for financial and hardship assistance. Unemployment supplements income, but food benefits, health coverage and utility help are often available as well. Here's some of what onsemi's hub states run: California, Arizona, Maine, Idaho, and every other state is here.
• Mind the health insurance window. Losing coverage opens a 60-day special enrollment period, and an ACA plan usually beats unsubsidized COBRA. Compare your options before the employer coverage lapses, and read how the COBRA clocks run if you are weighing it seriously.
• Get your real runway number. Severance plus savings divided by reality. The calculator takes five minutes.
• Know which clocks are already running. Severance review windows, COBRA election, visa grace periods, and 401(k) rollovers all run on federal deadlines that started at termination. All five deadlines are here.