Boeing said Friday that it will lay off some 800 Machinists by the end of the year as work declines on its newest jet programs, the 787 Dreamliner and 747-8 jumbo jet.Company spokesman Doug Alder said that other reductions will be made through attrition and that the total number of positions cut this year will be 2,000 to 2,300."We always expected employment requirements would come down on these programs after we stabilized production," Alder said. "That's what's happening."The news, delivered to managers in Everett, Wash., and union officials Friday morning, comes as a shock because Boeing jet production is set to soar this year.The 787 production rate is planned to double to 10 jets per month by year's end. Alder said the cuts are not related to the grounding of the 787 over problems with its battery system.The layoffs will affect chiefly employees who refurbish and do modifications on jets that have rolled off the assembly line in need of rework, he said.In a statement, Connie Kelliher, spokeswoman for the International Association of Machinists, sought to downplay the cuts."This is not the start of a Boeing down cycle," Kelliher said. "Unlike past layoffs, there are no production rate decreases on any airplane line. Production rates remain high, and there is a seven-year backlog."Alder said that the planned 737 and 787 production increases will go ahead but that "we feel like we have the appropriate amount of workforce in place so production continues as normal and 787 continues to its goal of 10 per month by year end."Mark Blondin, national aerospace coordinator for the International Association of Machinists, said the company's attrition rate has been lower than normal as older workers put off retirement in a down economy.