This Nov. 14, 2011 photo, shows the company logo on a Hewlett-Packard keyboard at the Micro Center computer store in Santa Clara, Calif.(Photo: Paul Sakuma, AP)

SAN FRANCISCO — Four ex-employees of Hewlett Packard are suing for age discrimination, claiming they were purged unfairly as part of a major restructuring involving tens of thousands of layoffs.

The proposed class-action suit, filed in U.S. District Court in San Jose, Calif., on Aug. 18, claims the technology giant “made it a priority to transform itself from an ‘old’ company into a ‘younger’ operation.”

“HP has hired a disproportionately large number of new employees under the age of 40 to replace employees aged 40 and older who were terminated,” the suit alleges.

The plaintiffs — Donna Forsyth, 62, of Washington; Sidney Staton, 54 of California; Arun Vatturi, 52, of California; and Dan Weiland, 63, of Texas — say they were laid off when HP instituted a Workplace Reduction Plan that allegedly targeted older workers after the computer services and printer maker announced 27,000 jobs cuts in 2012, according to the lawsuit.

The Palo Alto, Calif.-based company and the two companies that split from it in November, HP Inc. (HPQ) and Hewlett Packard Enterprise (HPE), have eliminated more than 80,000 jobs since 2012. HP Inc. and HPE are defendants in the suit.

The 26-page complaint claims that in 2013, HP’s human resources department issued written guidelines requiring 75% of outside hires be straight out of school or “early career” applicants.

“We are aware of the claims, deny them and plan to defend against them,” HP Inc. spokesman Tom Suiter said in a statement.

In a statement, HPE said the workforce reductions were based on legitimate factors unrelated to age.

In Silicon Valley, where the workforces of major companies increasingly are under scrutiny for racial and gender diversity, ageism is a mounting concern. At least one recent lawsuit also alleges the valley is biased toward younger workers in their 20s and 30s.

Cheryl Fillekes, 47, a systems engineer who interviewed with Google but was not hired, is part of an age-discrimination lawsuit against the company in federal court in San Jose.

The Equal Employment Opportunity Commission, which is investigating the complaint, declined to comment. Google declined to comment.