Dual-Barrier Hiring Frictions
RCTReview
Employers in low- and middle-income countries rely heavily on informal referral networks due to concerns about employee misbehavior and a lack of verification mechanisms [1]. This reliance creates a dual-barrier friction: limited candidate reach combined with severe information asymmetry regarding applicant trustworthiness [1, 2].
Picture this
Imagine trying to buy a used car from strangers outside your town. If a company advertises your request on a giant digital billboard, thousands of people will show up with cars, but you will be afraid to buy any of them because you cannot verify if the engines work. Conversely, if a mechanic offers to inspect cars for free, but you only look at cars in your small neighborhood, you will not find many options. Employers face the exact same double lock when hiring outside trusted acquaintance networks: they need a bigger crowd of applicants AND a trusted inspector to verify their identities before they feel safe shaking hands [1, 2].
What the evidence says
Providing promotional advertising alone doubled applicants per vacancy from 25 to 51 [7], but produced no measurable impact on firm hiring [8]. Candidate identity verification alone yielded zero statistically measurable increase in hiring relative to the comparison group [8].
- Who was studied
- 1,719 job vacancies across 1,576 firms in Bengaluru, India [3, 4].
- How
- Randomized Controlled Trial (RCT) evaluated 6 months post-intervention across four treatment arms: Scale alone (367 vacancies), Verification alone (467 vacancies), Joint Scale + Verification (470 vacancies), and Control (415 vacancies) [4-6].
What to do
Deploy candidate screening and third-party credential verification tools simultaneously whenever expanding digital recruitment pools beyond internal employee referral channels.
From the source
"Only the combination of both promotional advertising and identification verification led to more hiring by the firms. By contrast, providing a larger candidate pool or the identity verification alone had no measurable impact on hiring by firms." [8]
Online Job Portals and Firm Hiring in India.pdf