Australian Nursing Federation branch secretary Neroli Ellis said Labor was the only party that would not guarantee nexus or safe staffing models when the union asked for election commitments.

"Unfortunately the ALP have not," Mrs Ellis said.

She said the union approached all three parties in February with questions it wanted answered.

"The Greens and the Liberals say we will have nexus and safe staffing," Mrs Ellis said.

"That's very comforting for nurses because we are sick and tired of fighting over every wage increase."

The Liberal policy will see the nexus honoured in staged introduction, starting with the next agreement's negotiations in 2010.

Yesterday Opposition health spokesman Brett Whiteley said the Liberals would invest in more nurses, better wages and conditions and workplace protection.

As well, Mr Whiteley announced:

• $6 million for an extra 55 nurses statewide.

•Fund 20 additional nurse practitioners.

•Provide 25 additional clinical nurse educators.

•Fund 10 cancer care coordinators and three specialist educators for Parkinson's disease.

•Provide an additional $200,000 a year for professional development.

•A plan for nurse workforce sustainability.