Journalists at KOMO broadcast station in Seattle, which was acquired by Sinclair Broadcast Group in 2013, have chafed at programming directives.
The book, which describes dysfunction during the campaign, has been optioned by a Sony production company for a limited series.
The Times said that its digital advertising revenue rose 19 percent, to $50 million, in its first quarter, but print revenue fell 18 percent.
While many fans defended Mr. O’Reilly after his departure from Fox News, some network viewers said harassment accusations against him were worrisome.
Eleven current and former employees filed a class-action suit accusing the network of “abhorrent, intolerable, unlawful and hostile racial discrimination.”
The hiring of Ellen Pollock, formerly the editor in chief of Bloomberg Businessweek, is the latest move in a reshaping of The Times’s newsroom.