Howard Miller, a longtime Ottawa County manufacturer, began the first of dozens of September layoffs in Michigan as the tariff war forced it to shut its doors.

Around the same time, a once-promising California energy startup ran out of juice and laid off 37 employees in Holland.

Below are seven Michigan employers that announced plans to lay off over 500 employees in September.

The list is based on Federal Workers Adjustment and Retraining Notification (WARN) Act notices filed with the Michigan Department of Labor and Economic Opportunity.

The WARN Act requires businesses to provide advance notice - at least 60 days - in cases of qualified plant closings and mass layoffs.

Howard Miller

Howard Miller, a third-generation, family-owned home furnishings business, announced in July it p

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