Use the current redundant mining resources, machines, know how and labour to create a system to bring water from the tropical north to the drought affected areas of Australia.
This will create jobs now and for the future.
Construct nuclear powered salt water desalination plants around the nation to draw on ocean waters to supply unlimited water for use by all communities & industry. Australia has all the natural resources available to make this happen.
Peg minimum wages to local living costs. Areas with high unemployment usually have cheaper housing and therefore cheaper living costs but there is no incentive for business to go where unemployment is high because there is no cost benefit.