As well as marching to Change the Rules in Sydney, Melbourne and Brisbane, there were marches held across Australia that drew crowds numbering in their thousands.
May Day Marches - Part II
Across the country more than 250,000 people took to the streets to demand better conditions and pay for Australian workers.
They were out in force to demand we Change the Rules to make things for Australia's workers.
It was on for young and old in Adelaide where thousands came out for workers' rights and to Change the Rules.
There were some serious numbers out in the Top End, where ETU Assistant National Secretary David Mier joined local MPs as the unions fight for better conditions for Australian workers.
ETU members didn't shrink in the sun of Darwin where hundreds marched through the streets in a call to action for workers across Australia.
The Top End Territorians were joined by their comrades in Alice Springs and Queenslanders in Mackay, Rockhampton, Gladstone and Blackwater.
From Cairns in the north to the Gold Coast in the south, members of the ETU and their families came out to show the nation what being a proud member of Australia's trade union movement is all about.