Skill segmentation refers to dual labour markets, which consist of various sub-groups with little or no crossover capability. The labour markets are divided into the primary and secondary sectors. The primary sector generally contains the higher grade, higher status, and better paid jobs that require specific skills, with employers who offer the best terms and conditions. The secondary sector is characterized jobs which are mostly low-skilled and require relatively little training. There are few barriers to job mobility within the secondary sector.
McKinnon, Kerri and Kathleen Johnston, “Career Planning, Knowledge, and Skills.” In Blythe C. Shepard and Priya S. Mani (editors). Career Development Practice in Canada: Perspectives, Principles and Professionalism. Toronto: Canadian Education and Research Institute for Counselling (CERIC), 2014, p.194.