A controversial pay deal for Melbourne's firefighters is discriminatory against parents, women and people with disabilities, the state's human rights commissioner says.
Victorian Equal Opportunity and Human Rights Commissioner Kristen Hilton has applied to the Fair Work Commission to intervene against the Metropolitan Fire Brigade enterprise agreement.
The attempt will be heard on Thursday.
Ms Hilton says the deal, which has been agreed on by the firefighters and the MFB and is awaiting Fair Work approval, contains "discriminatory terms that prohibit or restrict part-time work for operational firefighters".
"These terms are unfair and unfavourable towards employees that seek to work part time, including women, parents, people with a disability and carers," she said in a statement.