The star made offensive comments about homosexuality during his set at the Ryman Auditorium in Nashville, Tennessee earlier this month (Jun11), telling the crowd he would "stab" his son if he was gay.
Morgan issued an apology after the story hit the headlines but invoked the wrath of gay rights groups and his 30 Rock co-star Cheyenne Jackson, who claimed he was "disgusted and appalled" by the actor's "homophobic rant".
Now Morgan has been called in for talks with chiefs of NBC, which airs 30 Rock, who are unimpressed with the star's antics.
NBC's network entertainment chief Robert Greenblatt tells The Hollywood Reporter, "We will always recognise an artist's freedom to express him or herself, but not when reckless things are said no matter what the context.
"Unfortunately, Tracy's comments reflect negatively on both 30 Rock and NBC - two very all-inclusive and diverse organisations - and we have made it clear to him that this kind of behaviour will not be tolerated.
"I speak for NBC and myself personally when I say we do not condone hate or violence of any kind and I am pleased to see Tracy Morgan apologising for recent homophobic remarks in his standup appearance."