By Hughie Coles, founder of MentorStack
How Mentoring Connects to Employee Retention
Mentoring is one input to retention, not a guarantee. It can address development, visibility, and belonging concerns. It remains one input alongside pay, management, and workload. Use your own workforce data to decide which groups need support and whether mentoring is the right response.
Deloitte's 2025 Gen Z and Millennial Survey (opens in new tab) reports that 86% of Gen Zs and 84% of millennials emphasized their need for mentorship and guidance. That is demand, not a measured retention effect. Our case-for-mentoring post covers the evidence we could verify.
Use exit, engagement, and workforce data from your organization to identify why people leave. Mentoring can address some development, visibility, and belonging concerns. It cannot correct pay, management, or workload problems.
Mentoring can make a career path more visible and give an employee access to someone with relevant experience. Measure whether participants get that value instead of assuming it.
Replacement cost is real but varies widely by role and salary, so work from your own numbers. The ROI calculator and our guide to measuring mentoring ROI show how to build the business case without borrowing someone else's figures.
Programs aimed at retention should start with the organization's own workforce data. Identify groups with a development, visibility, or belonging gap, then test the program design with the people it is intended to support. DEI-focused mentoring requires the same evidence and care.
One proposed long-term pattern is that employees who stay develop expertise, build networks, and later become mentors. Measure whether that pattern occurs and avoid attributing retention or knowledge transfer to mentoring without appropriate evidence.
Pay and mentoring do different jobs. Mentoring is one input to retention, alongside pay, management, and workload.
MentorStack was built for programs that need matching, follow-up and reporting to keep pace as participation grows. See how it works
Common questions
- Does mentoring actually improve employee retention?
- Mentoring may help, but we do not quote a retention figure we cannot verify at its source. Results depend on program design and on other factors such as pay, management, and workload. Use your own workforce data to decide which groups need support.
- How does mentoring differ from a compensation increase?
- Mentoring can address development, visibility, and belonging concerns. Compensation addresses pay for the employee's work. Neither intervention substitutes for sound management or a sustainable workload. Use exit, engagement, compensation, and workforce data from your organization to identify the problem before deciding which response, or combination, to test.
- What is the ROI of a mentoring program for retention?
- Estimates vary widely and no figure here is a MentorStack result. Replacement cost depends on the role, the salary, and how long the seat stays empty. To judge a program, use your own numbers: your program cost, your turnover, and your own replacement cost. The [ROI calculator](/roi-calculator) and our guide to [measuring mentoring ROI](/blog/measuring-mentoring-roi) show how.
- Which employee populations benefit most from mentoring for retention?
- Use your own workforce data to identify groups with a measured development, visibility, or belonging gap. Discuss the finding with the people the program would serve. Different groups may need different formats, access routes, and schedules, so test the design and compare participation, completion, feedback, and relevant workforce outcomes.
- How does mentoring compound over time unlike a pay raise?
- Employees who stay develop deeper expertise, build internal networks, and can become mentors themselves, carrying institutional knowledge forward. Programs aim for that pattern, but it is not guaranteed. A pay raise and mentoring do different jobs; mentoring is one input to retention alongside pay, management, and workload.