Informal Network Substitution for Formal Reference Letters
RCTClinical Trial
Formal reference letters from prior employers are widely assumed to reduce screening friction for job seekers. However, in urban male labor markets dominated by informal networks, written recommendations may be redundant or underutilized when personal social connections mediate job placements.
Picture this
Handing a prospective employer a written letter of recommendation is redundant when a trusted friend or colleague introduces the applicant directly. The direct word-of-mouth referral replaces the paper document, making the physical reference letter unnecessary during the hiring process.
What the evidence says
Participants acquiring work experience and a reference letter were 7.9 percentage points less likely to submit a reference letter when applying for jobs (IV coefficient = -0.079, standard error = 0.110) and reduced the total number of times a reference letter was submitted by 0.381 times.
- Who was studied
- N = 227 urban Malawian male job seekers tracked over an 8-month follow-up period in Lilongwe, Malawi.
- How
- Instrumental variables (IV) regression assessing the causal effect of acquiring short-term work experience and a standard employer reference letter on subsequent reference letter utilization during job applications.
What to do
Combine reference letter distribution programs with active workplace networking opportunities to maximize candidate signaling and job placement channels.
From the source
"Column 5 of table 9 shows that those who received work experience as a result of the experimental treatment were actually 7.9 percentage points less likely to use a reference letter when applying to a job."
Employment Exposure: Employment and Wage Effects in Urban Malawi