Level vs Chase vs Mixed: Choosing Your Capacity Strategy
Compare level, chase and mixed capacity strategies and learn how each approach manages production output, workforce costs and inventory in response to demand variability.
Demand is rarely constant. For operations managers, the central question is how production capacity should respond to that variability — and each answer involves a different set of trade-offs between cost, efficiency and customer service.
The Options
Level Strategy
Maintaining a constant rate of production regardless of demand fluctuations. Output is smoothed over time, which maximises equipment and workforce utilisation and keeps unit costs low. The consequence is that inventory builds in slow periods and is drawn down in peak periods — requiring sufficient storage capacity and working capital to hold that stock.
Chase Strategy
Adjusting production output to match demand as closely as possible. Inventory stays low, which minimises carrying costs, but achieving this requires flexible capacity — whether through workforce flexibility (overtime, temporary staff, shift pattern changes) or equipment that can be scaled up and down. Chase strategies can lead to higher unit costs due to overtime premiums and the inefficiency of variable production rates.
Mixed (Hybrid) Strategy
Combining elements of both: using a stable core capacity to meet baseline demand, and flexing a smaller portion of capacity to handle peaks. This approach attempts to capture the cost benefits of level production whilst retaining some responsiveness. It is the most commonly adopted model in practice and works well where demand variability is moderate and predictable.
Why It Matters in Practice
Capacity strategy is fundamentally a decision about where to absorb demand variability — in inventory (level), in the workforce and equipment (chase), or split between the two (mixed). The right answer depends on your product's shelf life, storage cost, workforce flexibility, customer lead time expectations and the cost of overtime versus carrying inventory.
Seasonal industries — food, retail, tourism — often have no choice but to incorporate significant chase elements. High-value, low-volume manufacturers may find that level production makes far more sense economically.
In the Simulation
In SPPIN Sim, your capacity strategy choice affects your inventory cost, unit production cost and service level KPIs. Level strategy scores well on unit cost but accumulates inventory cost in low-demand turns. Chase strategy keeps inventory lean but triggers overtime cost events when demand spikes. Mixed strategy tends to perform most consistently across the full run, particularly when paired with good demand forecasting.