A former associate at US elite firm Skadden Arps Slate Meagher & Flom is suing the firm for defamation and wrongful termination of employment.
Former Los Angeles-based associate Gary Green is suing Skadden in a Californian court, claiming he was fired from the firm after giving a junior associate a critical review.
He alleges that partners at the firm were concerned the review could lead to malpractice claims from a particular client.
Green was an associate in the firm's Los Angeles office for seven years from 2001 until March 2008, when his employment was terminated. Skadden declined to comment on the reason for the termination.
The court document states that Green accuses a partner in the LA office of "bizarre, inappropriate, abusive and/or illegal behaviour".
In a statement a spokesman for Skadden said: "The complaint was filed by an employee who was asked to leave the firm a year ago. The defendants firmly believe that the claims are without merit. They look forward to the opportunity to provide the fact finder with the full basis warranting the termination of his employment."
The firm added that the defendants intend to vigorously defend the case and expect to be fully vindicated.