Infrastructure projects in Sydney's west, including the WestConnex motorway and Badgerys Creek airport, will help create 1000 apprenticeships, the NSW government says.

Premier Mike Baird has announced the workers will be employed to help the state deliver on a $60 billion infrastructure program.

Companies vying for government contracts will have to employ a specific number of new apprentices.

“Bidders will be assessed on a range of criteria, including the number of apprenticeships they are prepared to create during construction and through the partnerships they forge with local TAFE and other tertiary institutions,” said Mr Baird in statement on Wednesday.

The latest initiative is part of Mr Baird’s push to promote economic activity Sydney’s western suburbs under his Minister for Infrastructure and Minister for Western Sydney portfolio.

“Working on our infrastructure projects will give young apprentices an opportunity to learn key new skills, and will leave the state with a lasting legacy of a highly-skilled workforce who received on-the-job training,” he said.