Company officials say a Wilmington plant that makes fluorescent light fixtures is scheduled to close within the next six to nine months.
Workers at the Lightolier plant were informed of the closure Friday.
Lightolier is a subsidiary of Philips Electronics.
Philips spokeswoman Silvie Casanova tells the Sun newspaper of Lowell that because the fixtures made at the Wilmington plant rely on older technologies, the company decided to phase out that facility.
She says it has not been determined what will happen with the jobs of the nearly 250 employees, many of whom are unionized.