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
Our interpretation: someone who has worked with you may be able to explain strengths that your resume does not capture. Whether that changes a screening decision depends on the employer 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.
Compare applications at different callback rates.
The starting rates are examples, not research benchmarks. Change them to explore the arithmetic; this does not predict your results.
- Time saved with referral
- 35.6h
- Value of that time
- $2,055
At these rates, referrals imply about 47.5 fewer applications per callback. The time value uses annual salary ÷ 2,080 hours. It is not money earned or saved and excludes time spent finding referrals.
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" helps someone recognize a relevant opening. Add a job link when you have one.
Make it easy: When asking for a referral, include your resume and a short explanation of why the role fits your experience. Give them room to decline.
What a useful referral adds
A useful referral can explain what you did together and how you worked. For example: "We worked on the finance-system migration together. She led the data cleanup, which helped our team shorten the month-end close." Use only details the referrer can confirm.