Tasmania's Labor leader says he doesn't share the view of the A-C-T-U's new boss, Sally McManus, who's condoned breaking laws she says are "unjust".
Ms McManus told 730, "I believe in the rule of law when the law's fair, when the law's right, but when it's unjust I don't believe there's a problem with breaking it."
Mr Green told Tasmania Talks Ms McManus is on the wrong track.
"Of course, no, I don't recommend anybody breaks the law.
"What I do recommend is that people, if they've got an issue they protest about it peacefully and make sure that they get their point across... in a country that supports free speech and a right to demonstrate," Mr Green said.
Before entering parliament, Bryan Green was State Organiser for the Australian Manufacturing Workers Union.
Tasmanian Liberal Senator Eric Abetz used stronger language to criticise the ACTU Secretary's stance.
"In Australia, we live in a democracy and in circumstances where democratically elected Parliaments pass laws those laws must be obeyed by all – no ifs, no buts.
"his shocking insight just shows how out of touch union bosses have become with hard working union members who stand by the rule of law," Senator Abetz said.