The actor is upset the NBC comedy show - which was created by Tina Fey and stars Alec and Tracy Morgan – will end after its current 13 episode run and asked the network if they would consider reducing his salary and making another series.
He tweeted: "I offered NBC to cut my pay 20 percent in order to have a full 7th and 8th seasons of 30 Rock. I realize times have changed (sic).”
'30 Rock' will draw to a close with a special hour-long season finale.
However, Alec - who plays television executive Jack Donaghyin in '30 Rock' – had previously hinted he was set to leave the NBC comedy.
The 54-year-old actor hit out at the network earlier this year after 'The Today Show' sent a news crew to his house following the arrest of a French-Canadian woman on charges of stalking him, so he said he was leaving the network "just in time".
He previously wrote on twitter: "Outside my apt today, along side the other stalkers from the tabloid press, a crew that identified themselves as being with the Today Show. The television crew camped outside my apt said they were with the Today Show. #howthemightyhavefallen. I haven't appeared on the Today Show in many years. But did they have to camp outside my apt?
"A story about stalking sure brings out the stalkers in the media. But, the Today Show? No one from NBC contacted me until the Today Show arrived at my apt. I think I'm leaving NBC just in time (sic)."
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