Fox News Channel host Bill O'Reilly hinted at retiring from his nightly TV show in a new interview with Adweek.

"I don't know. I go day to day. I don't want to work this hard much longer," O'Reilly told Adweek when asked how much longer he wants to host a nightly program. "I know that. Because I work hard. I earn my money."

O'Reilly has built a media empire, with a series of books, films and historical TV programs.

However, his bread and butter is "The O'Reilly Factor," which has been the No. 1 show on cable news for 16 years.

Also Read: Fox News' Jeanine Pirro Rips Gretchen Carlson's 'Absurd' Lawsuit

O'Reilly told the magazine, "The shocking thing to me is nobody beats me. These young gunslingers, they should be kind of beating me — but they're not."

When asked who is emerging as the next Bill O'Reilly, the FNC host didn't seem confident that anyone would step up right away.

"I think everybody has their own unique presentation," he said. "There will be somebody that comes. But it's not as easy as it looks."

Also Read: Fox News on Pace for Most-Watched Year in Network History

O'Reilly also mentioned that broadcast specials, such as the one Megyn Kelly had earlier this year, take too much time and that broadcasting legend Tom Snyder is the best he's ever seen on camera.