A suggestion Gaurav Sharma could be just the tip of the iceberg for the Labour Party's employment issues

Sharma will face a caucus vote this week to determine his future after he accused the party of bullying and misuse of taxpayer dollars.

Parliamentary Services has found the subject of the misuse accusation was actually legitimate spending.

Newstalk ZB Political Editor Barry Soper says Sharma's latest accusation has screenshots he claims are from distraught MPs.

He says the messages talked about mental health issues and a constant sense of feeling in trouble.