Fired Yahoo! employee taking Marissa Mayer to court

Marissa Mayer’s controversial employee review policies at Yahoo! are getting blasted again — this time in court.

A former Yahoo! manager sued the struggling Internet pioneer in a San Jose, Calif., federal court on Monday, alleging a supervisor manipulated the company’s controversial employee rating system — resulting in his losing his job in November 2014.

Gregory Anderson, formerly an editor for Yahoo!’s autos, homes, shopping, small business and travel sites, also alleges that senior managers under Mayer violated state and federal laws in laying off thousands of Yahoo! workers.

Yahoo! quickly defended its “Quarterly Performance Reviews,” or QPRs, which distribute employees into five buckets: “greatly exceeds,” “exceeds,” “achieves,” “occasionally misses” and “misses.”

The process “allows for high performers to engage in increasingly larger opportunities at our company, as well as for low performers to be transitioned out,” Yahoo! said in a statement.

Critics charge the QPRs have sapped morale.

Earlier this week, The Post reported that layoffs recently took a chaotic turn when as many as 30 workers were “accidentally” fired because of botched executions of a similar ratings system.

Yahoo! denied the snafus had occurred.

Monday’s explosive suit came a day before Mayer is slated to update Wall Street on Yahoo!’s turnaround strategy.

Mayer will face pressure on Tuesday from activist shareholders to lay off still more workers and put the company up for sale.

Insiders have speculated Mayer will announce payroll cuts of between 10 and 25 percent. But any number in that range is unlikely to appease activist investors, led by hedge fund Starboard Value, sources said.

In Anderson’s lawsuit, the former employee claims that Yahoo!’s QPRs — similar to an oft-maligned “stack ranking” system that has been used and discarded by companies including GE and Microsoft — was routinely manipulated by supervisors.

Anderson, who also claims he was a victim of sex discrimination, says he was fired despite numerous “achieves” ratings when he got a surprise phone call from his supervisor’s own boss, Megan Liberman, telling him he was terminated.