Employee turnover is one of the most expensive and disruptive challenges facing UK organisations. The Chartered Institute of Personnel and Development (CIPD) estimates the average cost of replacing an employee at between 50 and 200 percent of annual salary, depending on seniority and specialism. For organisations losing experienced professionals and managers, the cumulative cost in recruitment, onboarding, lost productivity, and knowledge transfer is significant.
Turnover is rarely caused by a single factor, and rarely solved by a single intervention. Understanding the drivers of turnover, and building leadership and management practices that address them systematically, is where durable reductions are achieved.
What Drives Turnover
Gallup's extensive research on employee engagement and turnover has produced one of the most consistent findings in organisational psychology: the quality of the relationship with a direct manager is the strongest predictor of whether an employee will stay or leave. "People leave managers, not companies" is a simplification, but it reflects a genuine empirical pattern.
The most commonly cited reasons employees give for leaving include lack of development opportunities and career progression, poor relationship with their direct manager, feeling undervalued or unrecognised, a mismatch between stated values and actual culture, workload and burnout, and compensation below market expectations.
Notably, the top reasons are largely within the influence of managers and L&D teams. This is both a responsibility and an opportunity.
The Role of Managers in Retention
Research from LinkedIn's Global Talent Trends reports consistently identifies manager quality as the primary driver of the employee experience, ahead of company brand, benefits, and technology. The specific manager behaviours most associated with retention include the following.
Regular one-to-ones. Employees with managers who hold regular one-to-one conversations report significantly higher engagement and lower intention to leave. The mechanism is straightforward: regular dialogue surfaces concerns early, creates a developmental relationship, and signals that the employee's work and growth matter to their manager.
Active career development conversations. Research from Deloitte shows that employees who believe their organisation supports their career development are significantly less likely to leave. This is not just about formal training: it includes managers who understand an individual's goals, advocate for their development, and create opportunities for growth within the team.
Genuine recognition. Recognition is consistently underdone in organisations. A 2022 Gallup study found that only one in three employees strongly agreed they had received recognition for good work in the previous seven days. Specific, timely recognition from a direct manager is one of the highest-impact and lowest-cost retention levers available.
Honest, transparent communication. Employees who feel they receive honest information about the organisation's direction, challenges, and plans are significantly more likely to trust leadership and less likely to be receptive to external opportunities.
Systemic Factors
Beyond individual management behaviour, leaders can reduce turnover through structural decisions: designing roles with genuine scope for growth and development, building strong onboarding that creates connection, clarity, and early productivity, creating cultures of psychological safety where problems can be raised without fear, and using exit interview data systematically to identify patterns and act on them.
One frequently underutilised lever is stay interviews: structured conversations with high-performing employees focused on what keeps them engaged and what might lead them to leave. The information gathered is more actionable than exit interview data, which arrives after the decision has already been made.
The L&D Dimension
Leadership capability is the primary lever for reducing unwanted turnover, which means L&D investment is directly relevant to retention outcomes. Programmes that develop managers' coaching skills, feedback capability, and ability to hold effective development conversations are among the highest-return retention investments organisations can make.
If you would like to discuss how our management development and coaching skills programmes can support your organisation's retention strategy, [contact us](/#contact).
References
CIPD (2023) Resourcing and Talent Planning Survey. London: Chartered Institute of Personnel and Development.
Gallup (2023) State of the Global Workplace Report. Washington, DC: Gallup.
LinkedIn (2023) Global Talent Trends. Sunnyvale, CA: LinkedIn.