Operational Case Study (OCS)
OCS — the synoptic Operational Level Case Study exam. A 3-hour human-marked written exam that brings together E1, P1, F1 into a real-world business simulation.
Exam Duration
3 hours
Pass Mark
80 out of 150 scaled score (equivalent to approximately 53%)
Students
30,000+
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Operational Case Study (OCS) — overview
The Operational Level Operational Case Study (OCS) is the synoptic assessment that brings together the content from E1, P1, F1 into a real-world business simulation. It's a 3-hour, human-marked exam sat four times a year (Feb, May, Aug, Nov), with pre-seen material released at least 6 weeks before each sitting.
The exam itself presents an 'unseen' variant built on the pre-seen organisation. You'll be asked to construct written responses in standard business formats — emails, memos, reports, briefing notes — across four equally-weighted sections of 45 minutes each. Once a section's 45 minutes are up, you cannot return to it. Questions test your ability to analyse new information in the context of the pre-seen, apply the relevant frameworks, and communicate clearly to a specified audience.
OCS is human-marked against a detailed rubric. The pass mark is 80/150 — roughly 53% — and you must have passed all three Operational Level objective tests (E1, P1, F1) before you can sit the case study.
What You'll Learn
- Discuss costing information to support differing needs of the business
- Discuss budget information for the purposes of planning and control
- Analyse financial and non-financial information to communicate insights about organisational performance
- Apply relevant financial reporting standards and corporate governance, ethical and tax principles
- Analyse information to support short-term decision making
- Discuss the management of working capital
Career Relevance
Completing the Operational level and gaining the CIMA Diploma in Management Accounting (CIMA Dip MA) opens roles such as Finance Officer, Management Accountant, Financial Reporting Assistant, Cost Accountant, and Finance Business Partner. It also prepares you for the Management level and the CGMA designation.
Exam Format
- Duration:3 hours
- Pass Mark:80 out of 150 scaled score (equivalent to approximately 53%)
- Format:Business simulation based on pre-seen material released at least 6 weeks before the exam. The exam itself presents an 'unseen' variant with four equally-weighted sections of 45 minutes each. Candidates cannot return to previous sections once 45 minutes have elapsed.
Prerequisites
You must have passed all three Operational Level objective tests (E1, P1, F1) before you can sit OCS. This is CIMA's subject-gating rule, and it applies to every level of the Professional Qualification.
Operational Case Study (OCS) core activities
The core activities examined in OCS and their assessment weightings.
Operational Case Study (OCS) exam format
Structure, sittings, marking, and what to expect on the day.
Case Study Examination (human-marked, written response)
3 hours
Business simulation based on pre-seen material released at least 6 weeks before the exam. The exam itself presents an 'unseen' variant with four equally-weighted sections of 45 minutes each. Candidates cannot return to previous sections once 45 minutes have elapsed.
Four windows per year — February, May, August, November — with pre-seen materials released around 6 weeks beforehand
80 out of 150 scaled score (equivalent to approximately 53%)
How to pass Operational Case Study (OCS)
Expert tips from Learnsignal's CIMA tutors for the OCS exam.
Read the pre-seen cover to cover
The pre-seen is released at least 6 weeks before the exam. Read it, make notes, sketch the org structure, flag key financial data, and identify likely risks — well before you see any exam information.
Practise writing in business formats
OCS answers are emails, memos, reports, and briefing notes — not abstract essays. Practise each format. Use headings, short paragraphs, bullet points where appropriate.
Core activities cover all three OTs
OCS pulls from E1, P1, and F1. Your notes should be integrated, not siloed — a working capital question may need financial reporting and costing insight to answer well.
Time management is critical
Four 45-minute sections, and you cannot return to a section once its time is up. Plan 5 mins to read, 30 mins to write, 10 mins to review — and stick to it.
Use the pre-seen — don't parrot it
Examiners penalise unreflective copying from the pre-seen. Integrate it with the unseen information and apply judgment. Show you're adding value, not just summarising.
Structure every response
Introduction (1 sentence), main content in clear headings, short conclusion with recommendation. A well-structured answer scores higher than a longer, unstructured one.
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See CIMA pricing →Operational Case Study (OCS) — frequently asked questions
Common questions about OCS — sittings, pre-seen, marking, preparation.
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