As part of our series on Employability Skills , this primer explains how we determine potential job transitions for Canadian workers considering a career change. We identify potential transitions for Canadian workers seeking new career opportunities that are both viable and desirable. In order to assess potential job transitions, we applied the U.S.-based O*NET occupational framework to Canadian labour data. We also included Canadian job postings data. The result is a comprehensive database covering 450 occupations that lists pairwise matches between an initial occupation and other jobs that are prospective transitions. The database will provide different stakeholders with a unique tool for labour market planning. The job transitions database is expected to be continually improved and refined as more and better data become available.