Welcome to Resource Management!
In this chapter, we are looking at the "Operations" side of a business. This is where the magic happens—turning raw materials and ideas into finished products or services. We will explore how businesses try to work faster, cheaper, and better than their rivals. Whether you are aiming for an A* or just trying to get your head around the basics, these notes will help you master how businesses manage their resources effectively. Let's dive in!
1. Production, Productivity, and Efficiency
Every business needs a way to make its products. The method they choose depends on what they are selling and who they are selling it to.
Methods of Production
Job Production: Making one unique item at a time, specifically for one customer. Example: A custom-made wedding dress or a luxury yacht.
• Pros: High quality, unique, can charge a premium price.
• Cons: Very expensive and slow.
Batch Production: Making a group (batch) of identical products, then switching to a different batch. Example: A bakery making 50 loaves of white bread, then cleaning the ovens to make 50 loaves of brown bread.
• Pros: Faster than job production; allows for some variety.
• Cons: Down-time between batches (cleaning machines) can be wasteful.
Flow Production: Products move continuously along a production line. Example: A Coca-Cola bottling factory.
• Pros: Huge quantities made very cheaply (economies of scale).
• Cons: Very expensive to set up; boring for workers; if one machine breaks, the whole line stops.
Cell Production: The production line is split into teams (cells). Each team is responsible for a significant part of the product. Example: A car parts assembly where one team handles the electronics.
• Pros: Better motivation for workers; teams can solve their own problems.
Productivity and Efficiency
Don’t confuse these two! They are cousins, but not twins.
Productivity is about how much you get out compared to what you put in. It is usually measured per worker.
\(Labour Productivity = \frac{Total Output}{Number of Employees}\)
Efficiency is about doing things at the minimum average cost. An efficient business produces high quality without wasting money or materials.
Labour-intensive: Production relies mostly on people. Example: Fruit picking or hairdressing.
Capital-intensive: Production relies mostly on machinery and technology. Example: Car manufacturing.
Quick Review: To improve productivity, a business can train workers better, invest in better machinery, or find ways to motivate the staff.
Key Takeaway: Choosing the right production method and keeping productivity high helps a business stay competitive by keeping costs low and quality high.
2. Capacity Utilisation
Imagine a cinema with 100 seats. If only 20 people are watching the movie, the cinema is "under-utilising" its capacity. It is wasting space!
Calculating Capacity Utilisation
This is a very common exam calculation:
\(Capacity Utilisation = \frac{Current Output}{Maximum Possible Output} \times 100\)
Implications
Under-utilisation (low %): The business has "spare capacity." This means average costs are higher because the fixed costs (rent, salaries) are spread over fewer products. However, it does mean the business can easily handle a sudden new order.
Over-utilisation (near 100%): The business is flat out. While this keeps average costs low, it can lead to stress for workers, machine breakdowns (no time for repairs), and turning away customers because you're too busy.
Did you know? Most businesses aim for about 90% capacity. It’s high enough to be efficient, but leaves a little "breathing room" for repairs or emergencies.
Key Takeaway: High capacity utilisation lowers the cost per item, but 100% isn't always perfect because it leaves no room for mistakes or growth.
3. Inventory Control
Inventory (also called stock) includes raw materials, work-in-progress, and finished goods. Managing this is a balancing act.
The Inventory Control Diagram
You need to be able to "read" an inventory graph. Look out for these terms:
• Buffer Inventory: The "safety net" stock kept just in case there is a delay from suppliers or a sudden jump in demand.
• Lead Time: The time between ordering new stock and it actually arriving.
• Re-order Level: The amount of stock you have left when you trigger a new order.
Just in Time (JIT)
JIT is a "lean" technique where the business holds no buffer stock. Materials arrive exactly when they are needed for production.
• Pros: No money tied up in stock; no need for big warehouses; no stock goes out of date.
• Cons: If the delivery truck is late, production stops immediately! It requires a very strong relationship with suppliers.
Common Mistake: Students often think JIT is always better. It's not! JIT is very risky. "Just in Case" (holding buffer stock) is safer for businesses with unreliable suppliers.
Key Takeaway: Good inventory control reduces waste and ensures the business never runs out of products to sell.
4. Quality Management
Quality isn't just about being "fancy"—it’s about meeting the customer's expectations every single time.
Control vs. Assurance
Quality Control (QC): Checking the product at the end of the line. It's like a teacher grading your paper after you've finished. If it's wrong, you have to throw it away (waste).
Quality Assurance (QA): Building quality into every stage of the process. Workers check their own work as they go. This aims for "zero defects."
TQM and Kaizen
Total Quality Management (TQM): An approach where everyone in the business is responsible for quality, from the CEO to the person cleaning the floor.
Kaizen: A Japanese philosophy meaning "continuous improvement." It involves making small, frequent, positive changes rather than one giant expensive change.
Quality Circles: Small groups of workers who meet regularly to discuss how to solve problems and improve the way they work.
Memory Aid: Think of Kaizen as "Constant Small Steps." Small improvements (like saving 5 seconds on a task) add up to a huge competitive advantage over time.
Key Takeaway: Quality management reduces waste (from faulty goods) and builds a strong brand reputation, allowing the business to charge higher prices.
Final Quick Review Box
• Productivity: Output per worker. High productivity = lower costs.
• Capacity Utilisation: How much of your "max" you are using. Aim for high, but not 100%.
• JIT: Stock management with no safety net. Saves money but increases risk.
• Lean Production: Any method (like Kaizen or JIT) that focuses on minimising waste.
• QA over QC: It is better to prevent a mistake than to find it at the end!
Don't worry if the formulas or graphs seem tricky at first. Practice drawing the Inventory Control diagram and calculating Capacity Utilisation a few times, and it will become second nature!