Thousands of workers will be out in force for wage increases and job security in union rallies across the country over the next two weeks beginning with a delegates mass meeting in Melbourne today.

The union representatives will meet in Melbourne town hall before workers rally across Australia from Newcastle, Ipswich, Canberra, Maryborough, Fremantle, Darwin and Melbourne until May 18.

The marches will be the biggest campaign since the your rights at work effort in 2007 which helped bring down the Howard government and work choices.