Ms Belfrage has spoken out about her treatment at George Calombaris' restaurant before, telling The Project he owed her between $3000 and $4000 and calling for him to be dropped from the show.
"I personally have money owing to me and there's a group of people I used to work with that I'm in contact with still that haven't been contacted by this second or third wave of media around the Made Establishment wage saga, so I completely believe that there's more back payments to be made," she said last week.
"There are so many business owners and chefs that do the right thing with paying their workers and have good principles, they should be rewarded by being able to be on those shows," she said.
On Tuesday, Calombaris, Gary Mehigan and Matt Preston walked out on the show that made them household names after an 11 season run.
Network Ten said the split was due to a contract dispute and it was reported the three, each on $1 million a year, had each demanded between an alleged $400,000 and $1 million extra.
On Tuesday night, Mehigan denied they had parted ways with the network over money, and news.com.au reported the trio were forming their own production company to pitch a show to Netflix or Amazon.
The rolling story about MasterChef and Calombaris came after online digital union Hospo Voice called for his sacking for underpaying workers including Ms Belfrage.
The chef and his Made Establishment company was fined a "contrition payment" of $200,000 by the Fair Work Ombudsman for underpaying 515 workers a total of $7.8 million.
Calombaris apologised for his actions, and in the lead-up to Tuesday evening more than 22,000 people signed a petition calling for him to be sacked from MasterChef.
On Wednesday evening, Australian Council of Trade Unions secretary Sally McManus told A Current Affair Network Ten had made the right decision in splitting with Calombaris.
"Look we think it's a really good decision by the network for him to no longer be a judge because why should he be a role model?" Ms McManus said.
"He's someone who's been held up and given that position as a celebrity chef and they're not the type of people we should be looking up to."