Productive Efficiency: Stock control

Productive efficiency in stock control refers to how well a business manages its inventory to minimise costs while meeting customer demand. In the OCR A-Level Business syllabus, this topic sits within operations management, focusing on the trade-off between holding too much stock (incurring high storage costs and risk of obsolescence) and holding too little (risking stockouts and lost sales). Key techniques include Just-In-Time (JIT), Just-In-Case (JIC), and Economic Order Quantity (EOQ). Understanding these methods helps students analyse how businesses can achieve cost leadership or maintain service levels.

Effective stock control is critical because inventory often represents a significant current asset. Poor management can tie up cash that could be used elsewhere, leading to liquidity problems. Conversely, efficient stock control reduces waste, improves cash flow, and supports lean production. For example, JIT systems, used by Toyota, minimise inventory but require reliable suppliers and accurate demand forecasting. In contrast, JIC systems, common in retail, hold buffer stock to prevent disruptions. Students must evaluate which approach suits different business contexts, considering factors like product perishability, supplier reliability, and demand volatility.

This topic links to broader business concepts such as capacity utilisation, quality management, and supply chain management. It also connects to financial ratios like inventory turnover and the acid test ratio. By mastering stock control, students can assess operational efficiency and its impact on profitability. In exams, they may be asked to calculate reorder levels, interpret stock control charts, or recommend improvements based on case study data.