The bulk of the layoffs will hit Boeing sites in Los Angeles and Orange counties, among thousands to hit Boeing nationwide.

Boeing has laid off hundreds of additional employees in California and Washington state as part of planned cuts that will eventually reduce the company's workforce by about 17,000.

Boeing is laying off 566 employees in California, all but 12 of them in Southern California. Nearly a third of the layoffs, or 179 positions, are happening in at Seal Beach facilities. Another 57 are being cut in Huntington Beach, 115 in Long Beach and 144 in El Segundo.