The study shows that when people start jobs that aren't a good fit, it leads to big swings in unemployment rates. This happens because when the economy slows down, companies lay off workers quickly. The study also found that when people look for new jobs while still employed, it affects how many job openings there are. This creates a pattern where unemployment and job vacancies move in opposite directions. The study suggests that the variety of job types available helps spread out job opportunities and unemployment rates.