Google employees stage a walkout on November 1, 2018, in New York, over sexual harassment. - A Google Walkout For Real Change account that sprang up on Twitter on October 31 called for employees and contractors to leave their workplaces at 11:10am local time around the world on Thursday. Tension has been growing over how the US-based tech giant handles sexual harassment claims. (Photo by Bryan R. Smith / AFP)        (Photo credit should read BRYAN R. SMITH/AFP/Getty Images)
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(CNN Business) —  

Protests are taking place at Google offices Wednesday, following allegations of retaliation from the company against employees who participated in walkouts last year.

Leaders of the protests have called on their co-workers to participate in sit-ins at Google offices around the world, six months after walkouts over the company’s handling of sexual harassment claims.

Organizers publicized the protests on Twitter, and one Google (GOOGL) employee told CNN Business that workers from at least 15 offices in the United States were expected to participate. A second employee in London confirmed that protests were planned for Wednesday.

Thousands of Google employees walked out in November after a New York Times report detailed years of sexual harassment allegations at the company and big payouts for accused executives.

Google made some changes to its internal policies following the protests, including eliminating its forced arbitration policies for employees bringing sexual assault or harassment claims.

But protest organizers say that some workers who participated in the walkouts or voiced concerns about sexual harassment and discrimination have faced retaliation from Google.

According to Wired, at least two employees involved with organizing the walkouts have accused the company of retaliation following the walkout. One claims she was demoted, while a second says her job was restructured.

“From being told to go on sick leave when you’re not sick, to having your reports taken away, we’re sick of retaliation,” organizers tweeted Tuesday from the Twitter account @GoogleWalkout.

Organizers said that testimonies from employees who allegedly experienced retaliation would be read at the sit-ins. Other workers would protest by calling in sick, they said.

A spokesperson for Google declined to comment on the protests, but said the company prohibits retaliation.

“To make sure that no complaint raised goes unheard at Google, we give employees multiple channels to report concer