Unions open to work with new Greens leader

Trade unions will continue to engage with the Australian Greens after Christine Milne's resignation as leader, noting she has served her party well.

The unions were more interested in the minor party's policies rather than its leadership, ACTU secretary Dave Oliver told the National Press Club in Canberra on Wednesday.

But he did so while joking: "Maybe in two weeks' time if the budget doesn't go too well we might have a new prime minister".