March 12 (Reuters) - Meta Platforms ( META ) on

Wednesday won an emergency arbitration ruling to temporarily

stop promotion of the tell-all book "Careless People" by a

former employee, according to a copy of the ruling published by

the social media company.

The book by Meta's former director of global public policy,

Sarah Wynn-Williams, was called by the New York Times book

review "an ugly, detailed portrait of one of the most powerful

companies in the world," and its leading executives, including

CEO Mark Zuckerberg, former Chief Operating Officer Sheryl

Sandberg and Chief Global Affairs Officer Joel Kaplan.

Meta will suffer "immediate and irreparable loss" in the

absence of an emergency relief, the American Arbitration

Association's emergency arbitrator, Nicholas Gowen, said in a

ruling after a hearing, which Wynn-Williams did not attend.

Book publisher Macmillan attended and argued it was not

bound by the arbitration agreement, which was part of a

severance agreement between the employee and company.

The ruling says that Wynn-Williams should stop promoting the

book and, to the extent she could, stop further publication. It

did not order any action by the publisher.

Meta spokesman Andy Stone said in a post on Threads: "This

ruling affirms that Sarah Wynn Williams' false and defamatory

book should never have been published.".

Wynn-Williams and Macmillan did not immediately respond to a

Reuters request for comment on the ruling.