Score contribution per author:
α: calibrated so average coauthorship-adjusted count equals average raw count
Despite the growing prominence of online job portals, firms remain reluctant to hire outside traditional recruitment networks. We find that experimentally providing firms with a combination of advertising and the ability to verify applicant identity increases portal-based hiring by 68 percent and the likelihood of filling a vacancy by 11 percent. Advertising attracts more skilled applicants, while verification enables the screening of unfamiliar applicants. Portal-based hires are retained beyond the standard assessment period, suggesting that they are well suited to the vacancies. Firms assigned only advertising also attract more skilled applicants, but providing neither advertising nor verification alone increases hiring.