Sunnyvale, Calif. -- Amid a rash of layoffs precipitated by the economic downturn, Sunnyvale-based Yahoo plans to begin laying off as many as 2,000 employees on Wednesday, All Things D reported. The company previously announced in October that it planned to cut at least 10% of its workforce, or 1,400-1,500 employees, but several sources at Yahoo told All Things D the actual number will be higher. "Things have changed since these layoffs were announced," a source close to the situation told All Things D. "But those additional cuts might not come Wednesday, but through attrition and a hiring freeze first." Last month, Yahoo CEO Jerry Yang announced plans to step down. The company has not yet named a replacement.