Uniondale-based Interstate National Dealer Services Inc., which sells extended warranties for vehicles, motor homes and boats, has filed a plant closing notice with the state Department of Labor, saying it will lay off 100 workers by early May and will move to Georgia.

The Feb. 2 notice filed with the state Office of Dislocated Worker Programs was classified as a "plant closing" and said the 333 Earle Ovington Blvd. office will shut down by June 30.

However, Carol Vaughn, vice president for human resources, said Friday not all of the company's jobs will move to Georgia. She declined to comment further.

Interstate, founded in 1980, was a publicly traded company until it went private and was subsequently bought in 2006 by the San Francisco private equity firm Golden Gate Capital.

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Monster.com in recent weeks listed several current job openings for Interstate in Atlanta, each ad specifying, "for local candidates only." The advertised jobs include a general counsel position paying $110,000, underwriting clerk, senior accountant, call center representative, call center manager, claims adviser and claims payable adviser.

The senior accountant position advertisement, which ran on Monster.com in mid-January, said, "The corporate headquarters is in the process of relocating to Atlanta; initially, this position will require travel to New York to work with the current accounting team to transition this role."