The alleged retaliation, which Google denies took place, follows a worldwide walkout of employees in November, when workers got up from their desks and left their offices to protest the company's payment of tens of millions of dollars in exit packages to executives accused of sexual misconduct, NBC News reported.
At the time, Google CEO Sundar Pichai said he supported the protest, reassuring employees that they would have the support they needed if they wished to participate.
Two of the walkout's organizers, Claire Stapleton, a marketing manager at YouTube, and Meredith Whittaker, an artificial intelligence researcher, are telling fellow employees that Google hasn't followed through with that promise.
On Monday, Whittaker said in a message posted to internal Google mailing lists that she was told this month that her role would be "changed dramatically," Wired magazine reported. She said she was told that she would have to "abandon" her work on artificial intelligence ethics and at a center she cofounded at New York University, the magazine said.
Stapleton said in the message that Google had demoted her and instructed her to take medical leave, even though she was not sick, Wired reported. She hired a lawyer and the company ultimately reversed the demotion after an investigation, the magazine said.
A person familiar with their accusations who spoke on condition of anonymity confirmed the contents of the internal company message.
Whittaker and Stapleton are planning a "town hall" meeting on Friday for employees to share stories and strategize, the person confirmed.
Google on Monday denied that any retaliation had taken place.
"We prohibit retaliation in the workplace, and investigate all allegations," Google said in a statement sent to NBC News. "Employees and teams are regularly and commonly given new assignments, or reorganized, to keep pace with evolving business needs. There has been no retaliation here."