WARN notice data posted by the state shows Microsoft's latest layoffs are expected to affect 830 staffers in Washington at its Bellevue and Redmond locations, with a start date of Aug. 31. Another two rounds of layoff notices issued in May and June were projected to affect a combined 2,290 Washington employees at the Redmond office.

Microsoft expanded a long run of layoffs by announcing a workforce reduction of up to 4 percent, or about 9,100.