Could Blake Shelton and Adam Levine be nearing the end of their runs on The Voice after starring on the NBC singing competition for the past 13 seasons?

According to a new report, Shelton and Levine enjoy their roles on the show but when it comes to their grueling schedules, they may be growing tired. That said, an insider has revealed that the two men aren't quite tired enough to leave their lucrative gigs.

“They both enjoy the job but also get sick of the grind and long hours of the show in the early stages of the show with the blind auditions. But it is not enough to quit because when they get frustrated with doing the show. They then cash the check they get from the show and all things work itself out,” a source revealed to Hollywood Life on Nov. 22.

According to a Life & Style magazine report earlier this month, Shelton and Levine are allegedly paid a whopping $13 million per season of the show.

Shelton and Levine are the only two cast members who have maintained their full-time roles on The Voice throughout the series' run. Meanwhile, the women of the show, including Shelton's girlfriend of two years, Gwen Stefani, have alternated.

In addition to Stefani, female cast members like Alicia Keys, Jennifer Hudson, Christina Aguilera, Shakira, and Miley Cyrus, and male cast members such as CeeLo Green, Pharrell Williams, and Usher have come and gone.

“They make so much money that it is a bunch of hot air that they are going to leave. And if there was any sense of them leaving, the show would pay them more to keep them around,” the insider added.

Big Life Changes Ahead

In the coming months, Levine and Shelton are both headed for major life changes. Shelton and his girlfriend continue to get more serious about their relationship and spend time as a family with her three kids.

Levine, on the other hand, is preparing to welcome his second child with wife Behati Prinsloo. As fans of the Maroon 5 singer may recall, Levine and Prinsloo welcomed their first child, daughter Dusty Rose, 1, in September of last year. In September of this year, Prinsloo confirmed she was pregnant again with a photo on Instagram.

To see more of Blake Shelton, Adam Levine, and their co-stars, Jennifer Hudson and Miley Cyrus, tune into the remaining episodes of The Voice Season 13 on Mondays and Tuesdays at 8 p.m. on NBC.

Tags: Blake Shelton The Voice Adam Levine