Victorian Premier Daniel Andrews is likely to face questions about Labor unity when parliament resumes.
He was forced to deny on Monday rumours that he made fun of former Liberal MP Donna Bauer in 2014 when she was fighting bowel cancer.
Mr Andrews labelled the claims "defamatory, disgusting and wrong".
Senior ministers backed Mr Andrews and also played down speculation his leadership could be challenged, saying he led a very united and strong team.
The Liberal opposition had argued the claim - from unnamed sources talking to the Herald Sun and 3AW - "adds to the view that he is a bully".
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Meanwhile, angry taxi licence owners and cab drivers are set to protest outside parliament opposing the government's ride-sharing reforms.
It follows protests outside the premier's electoral office on Monday, with members of the Victorian Taxi and Hire Car Families group arguing they will be financially ruined if the government goes ahead with its reforms.
Proposed changes will see taxi licences scrapped, and owners compensated with a licence buy-back scheme - but at a fraction of what licences were once valued.
The government will pay for a maximum two licences, giving $100,000 for a single licence and $50,000 for a second licence.
The group is set to meet with the government at the end of this week.
