An employee of the company Nest, a subsidiary of Google, filed a complaint against the parent company. The complaint was filed by an employee who was terminated after he shared a meme on his Facebook that mocked Nest's CEO Tony Fadell. Fadell has been recently criticized in the news for the company's culture. The complainant was questioned about the incident by the head of Google's security and then was fired.
See "Google-Owned Nest Faces Complaint of Unfair Labor Practices", Gina Hall, Silicon Valley Business Journal, June 3, 2016