Sydney FastWay plumbing boss caught in a punch up with an employee

A Sydney plumbing boss accused of sabotaging jobs and ripping off customers by whistleblowing ex-employees has been caught out again, this time in a punch up.

In vision obtained exclusively by A Current Affair, FastWay plumbing boss Jason Aboukalam appears to be involved in a fist fight with a former employee.

Ex-employee Ali can be heard saying off camera: "He just pushed me."

While another person in the vision can be heard saying "Get the f--- off me."

Other former customers have now come forward with allegations of over-charging against the plumbing boss.

"I was just absolutely flabbergasted," distraught customer Mary told A Current Affair.

When questioned by A Current Affair reporter Steve Marshall, Jason Aboukalam told him, "you obviously don't understand business."

See the full story from 7pm on A Current Affair.