What the experiments actually measured
The study did not establish one universal callback multiplier. It found that referrals carried information about performance and persistence that employers could not see in worker profiles alone.1
Referrals carried information about performance and persistence.
Three field experiments in one online labor market; these are observed differences in that setting, not universal hiring rates.
| Observed outcome | Difference | What it suggests |
|---|---|---|
| Submitted work on time | +11 percentage points | Referrals contained information about follow-through |
| Continued the job | +20 percentage points | Referrals contained information about persistence |
| Job performance | Higher | The signal extended beyond visible worker characteristics |
Pallais & Sands studied 1,266 workers in an online labor market. Role, company, relationship strength, and labor conditions can materially change the effect.
What referrals added in this study
In these experiments, referred workers outperformed comparable non-referred workers and were more likely to stay. The information was strongest when the referrer performed well and had a strong tie to the referred worker.1
The practical inference is narrower than "referrals guarantee attention." A credible referrer can add context that the application alone does not carry. Whether that changes screening depends on the employer, role, relationship, and what the referrer can honestly say.
Key findings
See the math
This calculator is scenario math, not an estimate from the Pallais and Sands experiments. Change the assumptions to see how a hypothetical lift would affect a search; do not treat the default as a forecast.
Try different response rates and see how many applications they imply.
This is simple arithmetic, not a forecast. Use rates that fit your role, market, and referral strength.
- Time difference
- 35h
- Time equivalent
- $2,019
At these assumptions, the model avoids 47 applications. “Time equivalent” values the modeled hours at salary ÷ 2,080; it is not money earned or saved.
How to build referral opportunities
Before you need a job: Build real working relationships. Someone who knows how you work can add more useful context than a stranger responding to a cold ask.
When you're looking:Be specific about what you want. "I'm looking for a Senior PM role at a growth-stage fintech" is actionable. "Let me know if you hear of anything" is not.
Make it easy:When asking for a referral, include your resume and a 2-sentence pitch. Your referrer shouldn't have to write your case for you.
What a useful referral adds
A useful referral adds specific, firsthand context: what you did together, how you worked, and why that experience is relevant now. "I know this person" is thin. "I watched them lead the migration that cut our close by three days" gives the reviewer something real to evaluate.