Primary labor market is to job security as secondary labor market is to what?

The primary labor market is known for having jobs that offer good pay, benefits, and job security. In contrast, the secondary labor market includes jobs that often have lower pay, fewer benefits, and less job security. Therefore, while the primary labor market is related to job security, the secondary labor market is often connected to job instability or insecurity. For example, a worker in the primary market might have a stable position as a teacher with a contract, while a worker in the secondary market might work as a temporary cashier with no guarantee of ongoing employment. This difference highlights how the two markets offer very different experiences and opportunities for workers.