On average, they are looking to work an additional 14 hours per week, although many are not taking active steps to secure those additional hours. https://www.rba.gov.au/speeches/2017/sp-gov-2017-07-26.html  4/13  7/26/2017  The Labour Market and Monetary Policy | Speeches | RBA  So many people want to work part time, but some of these would like more hours than they currently have.
This represents an additional source of unused capacity in our labour market that is not reflected in the unemployment rate. Given this, as part-time employment has grown, the RBA has paid additional attention to alternative measures of labour market slack.