Amid continued sluggishness in its chipmaking business, IBM has cut more than 600 jobs, with most of the losses affecting at a plant in Vermont.

About 500 of the jobs being eliminated are at a plant near Burlington, Vt., with the rest scattered among the company's other IBM Microelectronics facilities in the United States, the company said Monday. In addition, Big Blue is requiring a number of employees in its chipmaking unit, including top executives, to take a week of unpaid leave.

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