Unions to call 20,000 swinging voters

Unions will step up their election campaigning this weekend, making 20,000 telephone calls to swinging voters in marginal seats.

The two-day telethon will involve 600 ACTU volunteers asking voters about their issues of concern and urging them to put the Liberals last on July 2.

"We want to see Australians elect a government that will put their interests first, create jobs, and fund health and education with revenue from a fair and equitable tax system," ACTU secretary Dave Oliver said in a statement.