http://nypost.com/2015/11/01/is-jimmy-fallons-partying-getting-out-of-hand

The NY Post reports that "NBC is worried (http://www.lipstickalley.com/showthread.php/946937-He-s-a-mess-Insiders-say-NBC-is-worried-Jimmy-Fallon-s-drinking-may-be-getting-out-of-control) that Fallon (https://groups.google.com/forum/#!topic/rec.arts.tv/mOBlTw4oMNA)’s drinking has turned excessive (https://www.datalounge.com/thread/16006910-‘he’s-a-mess’-insiders-worry-fallon’s-partying-is-getting-out-of-hand).” The Post’s Page Six has documented "after-hours antics” at various bars. But so far, NBC has done nothing to deal with the problem, according to The Post.

http://tvline.com/2016/01/13/jimmy-fallon-injuries-drinking-problem-rumors-nbc/

NBC Entertainment chairman Robert Greenblatt addressed rumors (http://www.lipstickalley.com/showthread.php/977418-NBC-Exec-says-quot-Jimmy-Fallon-doesn-t-have-a-drinking-problem-that-we-know-of-quot) that excess drinking (https://www.datalounge.com/thread/16318488) led to Fallon’s freak injuries over the past year, admitting there were “conversations” about it among network brass.

https://www.yahoo.com/news/m/89db8038-bda2-3f9e-8d64-b29d89404da6/ss_nbc-defends-jimmy-fallon-amid.html

Rumors (http://blindgossip.com/?p=81089) have been swirling that funnyman Jimmy Fallon is drinking (http://www.dailymail.co.uk/news/article-3873278/NBC-denies-report-Jimmy-Fallon-s-boozing-control.html) and partying too much (http://pagesix.com/2016/10/25/nbc-fears-jimmy-fallons-boozing-is-out-of-control/?utm_campaign=SocialFlow&utm_source=P6Twitter&utm_medium=SocialFlow) after a series of bizarre incidents involving the star, but the network insists it is standing behind its late-night host. An insider claimed to Page Six that the network was concerned about "The Tonight Show's" star's drinking after some highly-publicized injuries. Fallon memorably severed his ring finger in June 2015 and chipped a tooth shortly after that. He was also spotted partying in New York City until the wee hours last month. “There were fears that Fallon was out of control and something could happen while he’s out drinking. Things got so serious at one stage that execs feared that Jimmy was splitting

They are protecting their brand at the expense of his life. :(