Economists often treat hiring as a sequential search process. An employer receives an application, screens and perhaps interviews the candidate, and then makes an offer or waits for the next applicant.

New research from the University of Chicago Booth School of Business finds, instead, that employers accept and process applications in batches. Employers post vacancies and accept applications for a mere nine days on average in technology-oriented sectors, even though it takes 45 days on average to fill one of these job positions.

In their working paper, “Application Flows,” Chicago Booth Professor Steven J. Davis and UChicago PhD scholar Brenda Samaniego de la Parra, find that the vacancy posting phase is much shorter than the screening and recruitment phase of the hiring process. They also shed light on the labor market by creating and mining a new U.S. database that provides second-by-second tracking of job postings and applications.

Their work marks one of the first large-scale studies to exploit matched data on vacancy postings and application flows to characterize the hiring process and quantify movements in labor market tightness.

The researchers built the new U.S. database linking 66 million applications to nearly 8 million online job postings since January 2012. The raw data come from DHI Group Inc., which owns and operates electronic platforms for posting job vacancies and attracting applications in computer-related occupations, technology sectors, financial services and other jobs that require technical skills.

The volume and granularity of the data allow the researchers to drill down to the job function level, such as software developer, and to specific skill categories, such as Javascript.

The study also finds that “recruitment firms” (which solicit applicants for third parties) and “staffing firms” (which hire employees for lease to other firms) account for 74 percent of vacancy postings and attract 60 percent of the applications.

“Many new hires don’t get the job by contacting the employer directly,” said Davis. “Instead, they get the job through labor market intermediaries, which play a huge role in the hiring process for technology-oriented jobs.”

Other findings include:

  • Job seekers prefer new job postings. In the study, 39 percent of applications flow to jobs posted in the past 48 hours and 54 percent flow to ones posted in the past 96 hours.
  • Workers apply for jobs early in the week. Applications per posting are about 45 percent greater on Mondays and Tuesdays than on Fridays, and four times greater than on Saturdays.
  • Job-seeking activity slacks off during the December holidays and rebounds in the new year. Applications fall by 30 percent in December relative to October and jump by 60 percent in January.

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Marielle Sainvilus
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Phone: 773.531.2894

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