Operations management explained for BBA, MBA and B.Com students: definition, the input-transformation-output model, objectives, ten decision areas, goods vs services, and a worked productivity example.
Updated 11 min read
Operations management (OM) is the planning, organising and controlling of the activities that turn inputs such as people, materials, machines, money and information into the goods and services customers want. Put simply, it is the part of management that answers the practical questions of any organisation: what to produce, how to produce it, how much, when, and at what quality and cost.
The topic matters because operations is where most of an organisation's people, assets and money are used. A company with a good product can still fail if deliveries are late, quality is uneven or costs run out of control. Good operations management turns a business idea into a reliable, efficient system, and it applies equally to a car plant, a hospital, a bank branch, a school or a restaurant.
Most textbooks define operations management along these lines: operations management is the design, operation and improvement of the systems that create and deliver an organisation's products and services. A shorter exam definition is that operations management is the process of planning, organising and controlling the activities that transform inputs into goods and services efficiently and effectively.
Three words in these definitions deserve attention:
Design covers long-term choices such as what product to offer, which process to use, where to locate and how much capacity to build.
Operation covers day-to-day running: scheduling, inventory, quality checks and maintenance.
Improvement covers continuous effort to raise productivity, cut waste and serve customers better.
The older term production management was used when the focus was only on factories. "Operations management" is the wider modern term because it includes services as well as manufacturing.
Operations management typically deals with questions such as:
The simplest way to picture operations is as a transformation process. Inputs enter, something is done to them, and outputs leave. Information about the outputs is then fed back so that managers can correct the process.
The transformation model applied to a bakery, with the feedback and control loop that compares output with standards.
The transformation can be physical (making furniture), locational (a courier moving a parcel), storage (a warehouse), informational (an accountant preparing a tax return) or physiological (a hospital treating a patient). In a bakery, mixing, baking, packing and inspection make up the process.
Outputs are goods, services or, most often, a mix of both. The bakery produces cakes and bread (goods) and may also offer home delivery and advice on custom orders (services).
Actual output is measured against standards for quality, cost and time. If loaves come out under-weight, or orders are late, managers adjust inputs or the process. This loop is what turns a one-off activity into a managed system.
Operations management helps an organisation to:
reduce cost by cutting waste, idle time and excess stock;
improve quality so that products and services meet specifications every time;
save time and deliver faster;
use resources properly, including labour, machines, space and capital;
satisfy customers through reliable, flexible service;
increase profit and build a competitive advantage that rivals find hard to copy.
Because operations usually accounts for the largest share of an organisation's costs and staff, even a small percentage improvement in productivity can have a large effect on profit.
The overall aim is often summarised as providing the right product or service, in the right quantity, at the right time, with the right quality, at the right cost. Slack and colleagues express this as five performance objectives:
Objective
Meaning
Bakery example
Quality
Doing things right, meeting specifications
Every cake has the correct weight and taste
Speed
Doing things fast, short lead time
Custom cake ready within 24 hours
Dependability
Doing things on time, keeping promises
Orders delivered at the promised hour
Flexibility
Being able to change what or how much is made
Switching to eggless cakes on request
Cost
Doing things cheaply, low cost per unit
Less wasted batter and electricity
These objectives often conflict. Very high flexibility, for instance, can raise cost. Part of an operations manager's job is to decide which objectives matter most to the target customers and to trade the others off sensibly.
Main functions (decision areas) of operations management#
The work of operations managers can be grouped into ten decision areas. The first few are mainly strategic and long term; the later ones are mainly tactical and short term.
Deciding what product or service to offer and what its features will be. Example: a college designs a new MBA specialisation, deciding its courses, duration and intake.
Deciding how the work will be done, including the choice of technology and the type of production system. Example: a hospital decides the sequence of steps for admitting a patient.
Deciding how much output the operation should be able to produce in a period. Example: a factory checks how many units it can make in one day and whether to add a shift.
Location is where the facility operates; layout is how machines, departments and people are arranged inside it. Example: a supermarket places billing counters near the exit so that customers flow in one direction.
Estimating future demand so that the other decisions rest on a sound basis. Example: a clothing store estimates sales for the festival season.
Managing raw materials, work-in-progress and finished goods so that there is enough stock without tying up too much money. Example: a restaurant keeps enough vegetables in stock without letting them spoil.
Fixing the timing of jobs, workers and machines. Example: a tuition centre schedules batches at different times so that rooms and teachers are not double-booked.
Making sure the product or service meets standards, through inspection, statistical quality control and continuous improvement. Example: a school monitors teaching quality and gives timely feedback.
Keeping equipment and systems in working condition through preventive and breakdown maintenance. Example: a factory services its machines on a fixed schedule.
Managing the flow of materials, information and money from suppliers to final customers. Example: a bookstore obtains books from publishers and delivers them to buyers.
Operations management applies to both goods and services, but they differ in important ways.
Basis
Goods
Services
Nature
Tangible
Intangible
Storage
Can be stored as inventory
Cannot usually be stored
Timing
Produced before consumption
Produced and consumed together
Customer contact
Low; customer rarely enters the factory
High; customer often takes part
Quality measurement
Easier, against physical specifications
Harder, depends on perception
Examples
Mobile phone, notebook
Teaching, haircut, banking
In practice most outputs are a bundle. A restaurant meal combines food (a good) with cooking, serving and ambience (services). That is why operations management is not only for factories: it also applies to hospitals, banks, schools, colleges, hotels and transport services.
Productivity is the ratio of output to input. If output rises while input stays the same, productivity improves.
Productivity=InputOutput
When only one input is used in the denominator (labour-hours, machine-hours) it is called single-factor or partial productivity. When several inputs are combined in money terms it is called multifactor productivity.
Efficiency means doing the work with minimum waste of time, effort and material, often measured as actual output compared with standard or expected output.
Effectiveness means doing the right work and achieving the intended goals. An operation can be efficient at making a product nobody wants, which is not effective. Good operations management aims for both.
Suppose a small bakery employs 12 bakers, each working 40 hours a week. In Week 1 it bakes 2,400 loaves. In Week 2, after rearranging the work area so that bakers walk less, it bakes 2,640 loaves with the same staff and hours.
Step 1: find the labour input.
12×40=480 labour-hours per week
Step 2: find labour productivity in each week.
Week 1=4802,400=5.0 loaves per labour-hour
Week 2=4802,640=5.5 loaves per labour-hour
Step 3: find the percentage change.
5.05.5−5.0×100=10%
Same labour input, more output: labour productivity rises from 5.0 to 5.5 loaves per labour-hour.
Step 4: a multifactor measure for Week 2. Suppose Week 2 inputs cost ₹72,000 for labour (480 hours at ₹150 an hour), ₹48,000 for materials and ₹12,000 for energy, a total of ₹1,32,000.
Multifactor productivity=₹1,32,0002,640 loaves=0.02 loaves per rupee
That is 2 loaves for every ₹100 of input. Comparing this figure over time shows whether the bakery is using all its resources better, not just labour.
Operations management in a service: a restaurant#
Operations management in a restaurant includes:
forecasting customer demand for each day and meal;
buying ingredients in the right quantity;
scheduling chefs and waiters for busy and quiet hours;
maintaining food quality and hygiene;
reducing customer waiting time;
controlling cost and food waste.
Every one of the ten decision areas appears here in some form, which shows how broad the subject is.
Modern operations management grew out of several developments. Adam Smith described the gains from division of labour. Frederick W. Taylor's scientific management (1911) studied work methods and set standard times. Frank Gilbreth developed motion study. Henry Ford's moving assembly line made mass production practical. Walter Shewhart introduced statistical quality control, later extended by W. Edwards Deming. From the 1950s onwards, Toyota's production system gave rise to lean and just-in-time thinking. Today the field also covers supply chains, sustainability and digital technologies.
For a 5-mark answer to "Explain operations management", write the definition, the input - process - output concept, the objectives, the key functions and a short example. For a 2-mark answer, write: operations management is the process of planning, organising and controlling the activities that transform inputs into goods and services efficiently.
What is the difference between production management and operations management?#
Production management traditionally referred only to manufacturing goods in factories. Operations management is broader: it covers both manufacturing and services such as banking, health care and education, and it includes supply chain and improvement activities.
Is operations management only for factories?#
No. Any organisation that converts inputs into outputs has operations. Hospitals, banks, colleges, hotels, airlines and restaurants all make capacity, scheduling, quality and inventory decisions.
Quality, speed, dependability, flexibility and cost. They describe what customers value in an operation and what managers try to improve.
How is productivity different from efficiency?#
Productivity compares output with input, for example loaves per labour-hour. Efficiency compares actual performance with a standard or expected level. A firm can improve productivity by investing in better machines even if workers' efficiency against standard is unchanged.
Why is feedback part of the transformation model?#
Without feedback, managers would not know whether outputs meet standards. Measuring outputs and correcting inputs or processes is what allows control and continuous improvement.
