California’s latest food-manufacturing shake-up involves a cereal and granola plant in San Dimas, following other recent cereal factory closures elsewhere in the country. Roskam Foods announced plans to shut the Los Angeles County operation and move its production to Michigan, with 115 workers affected according to California WARN records.
The company said the production consolidation was expected to finish by October 1, 2026. Its state layoff notice lists October 2 as the effective date for 115 permanent layoffs. Those dates have now passed, but no newer company statement independently confirming the final physical shutdown was located.
115 jobs affected in San Dimas
The California filing identifies the employer as Roskam Baking Company doing business as Organic Milling, with the affected location at 305 South Acacia Street in San Dimas. The notice was filed August 17 and lists 115 workers and an October 2 effective date. Food Engineering also reported the same 115-person figure from the state’s WARN information.
There is a distinction between the company’s production deadline and the workforce notice. October 1 was Roskam’s target for finishing the move of cereal and granola manufacturing. October 2 was the date reported for the job reductions. Neither date should be mistaken for evidence that the factory’s last shift was independently observed.
Production moves to Michigan
Roskam is combining its cereal and granola operations at its Grand Rapids, Michigan, campus. In its August 17 announcement, the company said the Midwest location offers advantages in ingredient sourcing, automation, production resources and quality control. It also pointed to recent capital investment in cereal and granola manufacturing there.
Roskam says production and scheduling for the affected products were already transferred to Grand Rapids, and customers were notified. The company expects the consolidation to avoid interruptions in customer service or product supply.
The San Dimas operation came into Roskam’s network through its combination with Organic Milling, a longtime contract manufacturer of cereals and granolas. Unlike a household-name cereal brand, a contract manufacturer produces food for other companies and private-label customers. That means the closure does not necessarily signal that any particular cereal or granola product is being discontinued.
What happens to the workers?
Roskam said affected employees had been notified and that it was working with other employers in the area to connect them with new opportunities. A spokesperson told WOOD-TV that the California plant employed as many as 119 people at its peak. That historical peak is different from the 115 jobs listed in the current WARN filing.
The broader company, founded in 1923, continues to make baked snacks, cereals, mixes and other foods across its manufacturing network. Roskam has not publicly specified how many new positions, if any, the consolidation will create in Michigan.
For San Dimas, the announced change means the loss of a local food-production operation and more than 100 affected positions. The confirmed facts are the closure plan, the transferred production and the state-recorded layoffs; the precise date of the final on-site production shift remains unverified.
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