The study looks at how searching for jobs while already employed affects the job market during different economic times. By including on-the-job search in their model, the researchers found that it leads to less fluctuation in real wages and a better match with actual data on job vacancies and unemployment rates. This is because workers searching for new jobs while still employed increase the pool of potential hires for companies, which helps stabilize the job market. Additionally, the study suggests that when real wages are less volatile, inflation is also likely to be more stable.