Joint Complementarity of Scale and Verification Intermediaries
Digital platforms often fail to drive adoption when they solve candidate reach without providing verification tools for employer risk management. Employers encounter high friction when evaluating unfamiliar candidates outside established social networks.
Picture this
Think of a lock that requires two different keys inserted at the exact same moment to open. Turn Key A (advertising) alone and you get a massive line outside your door, but you lock the deadbolt out of fear. Turn Key B (a badge inspector) alone and you have a secure door, but no one is standing in line. Turning both keys together lets employers invite screened candidates inside and complete the hire.
What the evidence says
The joint treatment increased employer-initiated candidate contact by 147% (from 2.5 to 6.2 candidates) and increased interview likelihood by 25% (13 percentage points). Jointly treated firms were 8 percentage points (68%) more likely to hire from the portal and 11 percentage points (73%) more likely to retain the portal hire after 6 months.
- Who
- 1,719 job postings across 1,576 urban firms in Bengaluru, India [3, 4].
- How
- Field RCT testing individual versus joint promotional advertising and third-party government ID verification services with administrative data tracking and 6-month follow-up surveys [4-6].
What to do
Bundle visibility-boosting advertisements with verified background or ID documentation when launching digital labor platform services for small and medium enterprises.
From the source
"Firms assigned the combination of services were 8 percentage points (68 percent) more likely to hire someone from the portal than the firms in the comparison group."
Online Job Portals and Firm Hiring in India.pdf