An extra 45 job guidance officers would be employed in Queensland high schools under a Labor government, Opposition Leader Annastacia Palaszczuk says.

State schools with 500 or more students would have the full-time officer or equivalent on staff.

Ms Palaszczuk said the program would be rolled out over three years from 2016 at a cost of $9 million.

"It will ensure more students get the professional support they need to make the best decision about their future studies and career options and cope with the stresses of study and teenage life," Ms Palaszczuk said while campaigning in Mackay.

"This is clearly an initiative that is going to help young people get the best start when they leave high school.

"This is about young children going through difficulties at school, they may be having family issues at home."

The policy is the first education announcement Ms Palaszczuk has made since the election campaign started.