Bill O'Reilly's position at Fox News grew increasingly tenuous on Tuesday as support from the Murdoch family showed signs of eroding, according to three people briefed on discussions about his future.
Mr. O'Reilly's fate at the network is expected to be discussed on Thursday at a board meeting for Fox News's parent company, 21st Century Fox. Chief among the considerations is a continuing investigation into Mr. O'Reilly's behavior conducted by the law firm Paul, Weiss, Rifkind, Wharton & Garrison.
Pressure on the company increased on Tuesday when another woman reported sexual harassment allegations against Mr. O'Reilly to 21st Century Fox.
The company recently renewed Mr. O'Reilly's contract, and the Murdoch family, which controls the company, has stood by him as allegations piled up. But after a New York Times article this month detailed harassment allegations against him, more than 50 companies have pulled their advertising from his show.
Women inside the company have questioned whether the company was serious about fixing a workplace culture beset by repeated allegations of sexual harassment. And calls for his dismissal grew louder Tuesday.
Mr. O'Reilly, the top-rated host in cable news, has been on vacation in Italy for the past week and plans to return to his show on Monday. He has received no indication that the company is planning to take him off the air, according to a person familiar with the matter.
A lawyer for Mr. O'Reilly, Marc E. Kasowitz of Kasowitz Benson Torres, said Tuesday that his client was being targeted by liberal groups trying to bring him down. "Bill O'Reilly has been subjected to a brutal campaign of character assassination that is unprecedented in post-McCarthyist America," he said in a statement. "This law firm has uncovered evidence that the smear campaign is being orchestrated by far-left organizations bent on destroying O'Reilly for political and financial reasons. That evidence will be put forth shortly, and it is irrefutable."