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ACCA Applied Knowledge · Business and Technology

Business Organisational Structure for ACCA Business and Technology

Organisational structure is how a business divides work, assigns authority and sets reporting lines. To answer BT questions, identify the clue in the scenario (size, span of control, where decisions are made, how departments are grouped), match it to the correct model or term, then eliminate options that fit a different concept.

What this chapter covers

This chapter explains how organisations arrange people and tasks so that work gets done and decisions get made. You start with Mintzberg's model, which splits an organisation into parts such as the strategic apex, middle line, operating core, technostructure and support staff. You then look at how work is grouped (departmentation), where decisions sit (centralisation and decentralisation), and how many people each manager supervises (span of control).

The chapter also covers the difference between the formal structure on paper and the informal structure of friendships and networks. It finishes with modern forms such as matrix, network and virtual structures, and with classic types such as entrepreneurial, bureaucratic and divisional structures. Most of the content is definitions and matching, so precision with terms matters.

This chapter connects to the rest of BT in several ways. Structure links to organisational culture and to leadership and management. It affects how governance and control work. It also shapes how the finance function and other functions are organised. Scenario questions in other chapters often assume you know why a business is structured the way it is.

Structure questions are usually short and factual, so they are among the easier marks in Section A if you know the terms well. The same ideas also appear as context in Section B multi-task questions on organisational topics. Many options in these questions look similar (for example centralised versus decentralised, or matrix versus divisional), and a small set of clear definitions lets you pick the right one quickly. A few focused study sessions can give you reliable marks.

Business organisational structure: topics in the order to study them

  1. 1Mintzberg's Organisational Structure ModelIt gives you the vocabulary for the parts of an organisation, which every later topic builds on.
  2. 2Organisational Structures and DepartmentationNext you see how work is grouped, for example by function, geography, product or customer.
  3. 3Centralisation and DecentralisationOnce you know the groupings, you learn where decision-making authority sits and the pros and cons.
  4. 4Span of Control and Scalar ChainThis adds the mechanics of reporting lines, which explain tall and flat structures and link to delegation.
  5. 5Formal and Informal OrganisationsWith the formal design clear, you can contrast it with the unofficial relationships that grow alongside it.
  6. 6Entrepreneurial, Bureaucratic and Other Structure TypesThese classic types pull together everything above, so they are easier to learn once the concepts are clear.
  7. 7Organisational Structure in Modern FormsStudy modern forms last, as they are best understood as responses to the weaknesses of the traditional structures.

How to prepare Business organisational structure

Aim to learn the terms precisely, then practise recognising them in short scenarios. Use short sessions, which suit phone study.

  1. Read each topic once and write a one-line definition for every key term in your own words.
  2. For each structure or concept, note one advantage, one disadvantage and one clue that signals it in a scenario.
  3. Make a comparison list for similar pairs: centralised versus decentralised, tall versus flat, formal versus informal, matrix versus divisional.
  4. Draw Mintzberg's five parts from memory and write what each does and who sits there.
  5. Practise objective test questions by topic. For each wrong answer, write down why the right option fits and yours does not.
  6. For multiple response questions, check the stated number to select and test each option separately as true or false.
  7. Finish with a mixed set of questions, and revisit your comparison list the day before the exam.

Common mistakes in Business organisational structure

  • Confusing the technostructure with support staff in Mintzberg's model.

    Fix: Remember that technostructure standardises and plans work, while support staff provide indirect services such as catering or legal advice.

  • Mixing up span of control with the scalar chain.

    Fix: Span is the count of direct reports. The scalar chain is the line of authority through the levels.

  • Assuming a wide span of control is always better or always worse.

    Fix: Wide spans suit skilled staff and routine work; narrow spans suit complex work needing close supervision. Check the scenario clues.

  • Treating centralisation and decentralisation as all-or-nothing.

    Fix: Most organisations mix the two. Read the question for which decisions sit where.

  • Ignoring the informal organisation as unimportant or purely harmful.

    Fix: Remember it can help communication and morale, and it can also spread rumours or resist change. Both sides can be tested.

  • Picking a structure from a keyword without checking the full scenario.

    Fix: Read the whole question, find the defining feature (for example dual reporting lines), then eliminate options that do not have it.

Last-day revision: Business organisational structure

  • Mintzberg's five parts: strategic apex, middle line, operating core, technostructure, support staff.
  • Technostructure designs and standardises work, for example analysts and planners; support staff provide indirect services.
  • Departmentation groups work by function, geography, product, customer or process.
  • Centralisation keeps decisions at the top, giving consistency and control but slower, less local decisions.
  • Decentralisation spreads decisions downward, giving speed and motivation but a risk of inconsistency.
  • Span of control is the number of subordinates a manager directly supervises.
  • A narrow span gives a tall structure with many levels; a wide span gives a flat structure.
  • The scalar chain is the line of authority from top to bottom of the organisation.
  • The formal organisation is the official structure; the informal one is the network of personal relationships.
  • Bureaucratic structures rely on rules and clear hierarchy; entrepreneurial structures rely on the owner's control.
  • A matrix structure gives staff two reporting lines, often function and project.
  • Network and virtual structures rely on outsourcing and technology links rather than one large in-house workforce.

Business organisational structure practice questions

Business organisational structure in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Business organisational structure: frequently asked questions

How should I study business organisational structure for ACCA BT?

Learn the key terms first, then compare similar concepts side by side. Practise objective test questions by topic so you can recognise the clues in a scenario.

Is this chapter mostly theory?

Yes, it is mainly definitions, features and advantages and disadvantages. There are no calculations, so accuracy with terms is what earns the marks.

Do I need to memorise Mintzberg's model exactly?

You should know the five parts and what each does. Questions often describe a group of staff and ask which part they belong to.

How does this chapter link to other parts of BT?

Structure affects culture, leadership, governance and how functions such as finance are organised. Knowing it helps you read scenarios in other chapters.