Of the people in the link, only person #7 is frictionally unemployed. Person #5 would be if they were not working part-time. Person #2 could be, depending on their reason for leaving the cod fishing industry.
Frictional unemployment occurs in three main ways:
- When a person is just entering the labor force and is looking for their first job.
- When a person quits a job to look for one they like better.
- When a person is fired for not doing the job well (as opposed to being laid off for economic reasons).
Person #7 is just entering the labor force and is therefore structurally unemployed. Person #5 is looking for a job they like better, but is still working part-time. Therefore, that person does not count as unemployed; they are underemployed. Person #2 could be frictionally unemployed if they left cod fishing to find a job they liked better. However, they will not count anyway because they have stopped looking for work and are therefore not in the labor force.