Qld Labor keep costings hidden

Labor has a secret economic plan for Queensland that won't involve assets sales, borrowing more money or higher taxes.

But those sketchy details are all the party will reveal amid mounting pressure to detail the costs of its election promises before Queenslanders vote on January 31.

Opposition Leader Annastacia Palaszczuk, who campaigned in Townsville on Tuesday with federal leader Bill Shorten, promised to hire an extra 875 teachers over three years.

It will bring the total number of new teachers to be hired in that time to 2500.

But, just like Labor's four other modest campaign promises to date, the party has refused to say how it will fund the $139 million policy.

"Our economic strategy is ready," Ms Palaszczuk said.

"We will announce it at a timing of our own choosing ... when I am ready."

Ms Palaszczuk said the party wouldn't sell assets, nor would it have to borrow more money to fund its commitments.

Shadow Treasurer Curtis Pitt also promised Labor wouldn't increase taxes, fees and charges.

"You won't get any more from me on that today," Mr Pitt told Fairfax Radio, before refusing to comment on the possibility of new taxes.

However, the Liberal National Party (LNP) is likely to say more about it, given the Opposition has repeatedly criticised it for sticking with the unpopular plan to long-lease public assets.

"It's just not good enough that the Labor party don't have a plan," Mr Newman said on the Sunshine Coast.

"It's just not good enough for her to walk around the state propped up by the federal opposition leader talking about things that they've learned to say in a focus group.

"It's time for a plan, an alternate vision."

Ms Palaszczuk hit back at the premier for refusing to say who'd take his job if he lost his seat but the LNP retained power.

It's a realistic scenario given Labor needs a 5.7 per cent swing in inner-Brisbane Ashgrove to unseat Mr Newman, while the party needs about 11 per cent uniform across the state to win the election.

But Ms Palaszczuk was less forthcoming with her own plans as opposition leader if Labor didn't win the election.

"We are in the election campaign; I am focused on being premier of this state," she said.

Mr Newman spent the day on the Sunshine Coast, promising $532 million to duplicate the railway between Beerburrum and Landsborough.