Workforce planning

Labour turnover is the rate at which employees leave a business and are replaced over a period, usually expressed as a percentage of the average number employed — for example, 40 leavers from an average of 250 staff is a turnover of 16%.

One reason is to ensure the business has enough staff with the right skills at the right time. By forecasting future labour demand and comparing it with the staff it expects to have, the firm can recruit and train in advance. This avoids being short-staffed (which would lose sales and harm quality) or overstaffed (which wastes money on wages), helping the firm meet its objectives.

The first effect is higher costs. When many staff leave, the business must repeatedly advertise, select and train replacements, and new employees take time to reach full productivity. This raises recruitment and training costs and means the firm pays wages for below-full output during the learning period.

The second effect is lost experience and lower quality. Leavers take valuable knowledge and skills with them, while inexperienced replacements make more mistakes and work more slowly. In a service business this also harms customer service and reputation.

Together, high turnover raises costs and weakens performance — and because it is often a symptom of low pay or poor management, the firm should usually address the underlying cause rather than just recruit faster.

A rise in labour turnover means more employees are leaving and being replaced, which has several implications for a manufacturer.

The first is higher costs. The firm must spend more on recruiting and training replacements, and new workers on the production line take time to reach full speed, so output per worker falls during the learning period. This raises the labour cost per unit, which is significant for a manufacturer competing on cost.

The second is lost productivity and quality. Experienced workers who leave take know-how with them, and inexperienced replacements are more likely to make mistakes, increasing waste and defects. This can disrupt production schedules and harm the firm's reputation for quality.

The third is lower morale. Constant churn unsettles remaining staff and teams, which can itself push turnover higher in a damaging cycle.

The severity depends on the cause and the industry: a small rise from a low base may be harmless or even healthy, bringing fresh skills, but a large rise above the industry norm signals a real problem — usually pay, conditions or management — that the firm must address at source. So the implications are mainly higher costs and weaker productivity/quality, with the seriousness judged against the scale of the rise and its underlying cause.

Raising pay to cut high turnover offers clear benefits. Higher pay should make staff less likely to leave for rivals, reducing turnover and so cutting the heavy recruitment and training costs the retailer currently faces. Retaining experienced staff should also improve customer service and productivity, since employees know the products and procedures — important in retail, where service drives repeat custom. A more stable workforce can also lift morale.

However, the decision has drawbacks. A significant pay rise increases labour costs, which is serious in retail where margins are thin; the saving from lower turnover may not fully offset the higher wage bill across all staff. Pay may also not be the real cause of the turnover — if the problem is poor management, dull work or no promotion, higher pay alone may not keep people. There is also a risk that rivals match the rise, removing the advantage.

Judgement. Whether to raise pay depends on why staff are leaving and on the balance between the wage-bill increase and the turnover savings. If low pay relative to competitors is the main cause and the cost of turnover is high, a targeted pay rise is likely worthwhile because the retained experience and lower recruitment costs outweigh the extra wages. But if turnover is driven by management or working conditions, the retailer would do better to combine modest pay improvements with better training, involvement and promotion — cheaper, non-financial measures that address the real cause. So a blanket large pay rise is justified only if pay is genuinely the binding problem; otherwise a mix of measures is the stronger choice.

Labour turnover measures how quickly employees leave and are replaced. Low turnover is widely seen as a sign of a healthy, well-managed business, but whether it is always beneficial depends on how low it is and on the firm's circumstances.

The case that low turnover is beneficial. Low turnover means the firm keeps experienced, skilled staff, so it retains valuable knowledge and strong customer relationships and avoids the heavy costs of constant recruitment and training. Stable teams work more productively because members know their roles and each other, and a low rate usually signals good HRM — fair pay, development and strong employee relations — which itself supports motivation and quality. For most firms, moving from high to moderate turnover brings clear gains in cost, productivity and service.

The case that low turnover is not always beneficial. If turnover becomes very low, problems emerge. First, the firm takes in few new people, so it misses out on fresh ideas, energy and up-to-date skills, which can weaken innovation and the ability to adapt — dangerous in a fast-changing market. Second, if almost no one leaves, promotion is blocked, frustrating ambitious staff who may eventually leave anyway or become demotivated. Third, the workforce ages, risking a future wave of retirements and resistance to change. Fourth, very low turnover can hide inefficiency, with underperforming staff retained simply because no one ever leaves.

Weighing it up (criterion). The benefit of low turnover depends on how low it is and how much the firm relies on fresh skills and innovation. For a firm needing stability and deep experience (e.g. a professional services firm), even very low turnover is largely positive. For a firm whose success depends on innovation and new thinking (e.g. a tech or creative business), turnover that is too low can be a real weakness.

Judgement. Low turnover is beneficial to a significant extent — but not without limit. Reducing high turnover is almost always good, since it cuts costs and preserves experience. However, very low turnover is not always beneficial, because it can starve the firm of fresh ideas, block promotion and age the workforce. The most defensible conclusion is that the goal should be an optimal level of turnover for the industry — low enough to retain expertise and control costs, but high enough to refresh the workforce and unblock progression — rather than the lowest possible figure.