The leadership crisis at Uber Technologies intensified as the board took a rare Sunday meeting to discuss the future of controversial CEO Travis Kalanick.

With accusations piling up that Mr. Kalanick turned a blind eye to sexism, bullying, and other misbehavior, directors were reportedly considering forcing him to take a three-month leave of absence.  The New York Times also reported the nine-member board "unanimously voted" to adopt all of the recommendations made in a report prepared by Eric Holder; Uber retained the former US Attorney General to investigate problems and suggest solutions.  This is expected to include the ouster of Emil Michael, described as a top lieutenant of Kalanick.

Last week, the ride-hailing company sacked its former Asia chief after it came out he allegedly obtained the medical records of a woman who was raped by an Uber driver in India.  And days before that, Uber fired more than 20 people in a separate investigation into accusations of discrimination, sexual harassment, unprofessional behavior, and bullying. 

Also last week, Uber's finance chief, New York general manager, and head of the self-driving car project left the company.

Long criticized over licensing and training issues, Uber's toxic internal culture came spilling out when former engineer Susan Fowler wrote in a widely-read blog her tale of being sexually harassed and getting no back up from human resources.  That set off an outpouring of similar accusations.  The company hired two law firms, including the one employing Mr. Holder to investigate.