Network Ten's Wake Up program and its early, morning and late news will be axed from Friday.
"Unfortunately, it is proposed that Wake Up and the Early, Morning and Late News will cease production on Friday May 23," Ten CEO Hamish McLennan said in a email to staff.
"It is a tough period for Ten and we need to take some painful but necessary measures to restructure the business."
Ten later confirmed the cuts.
"Network Ten would like to thank the people involved with Wake Up and the TEN Early, Morning and Late News for their dedication, enthusiasm and hard work," it said.
Ten Eyewitness News at 5pm will continue to be produced locally in each market.
A voluntary redundancy program is underway in the news and operations department.
"We need to use our News resources - staff and content - more effectively," Mr McLennan said in his staff email.
An industry source told AAP it was common knowledge within Ten that the breakfast show, which was launched in November last year, would be axed.
The fate of up to 150 workers is understood to be in limbo while management decidesjust how many will be made redundant.
Many of the employees, floor staff, crew and assistants were specifically recruitedto start up the breakfast show, which was to ring in a new era for the network.
It spent tens of thousands of dollars alone on building the set at Manly and running cables from Ten's Pyrmont headquarters out to the beach to avoid satellite transmission problems.
However, Wake Up had issues from the outset when its creator and producer Adam Boland suffered a breakdown and then quit.
The show's "third" host Natasha Exelby was axed within weeks.
The breakfast show has rarely attracted more than 50,000 viewers.
