Using people, rules and responsibility in a case
What to ask, what to calculate and what to say, with one worked case that brings the module together.
Key takeaways
- Most cases are decided by revenue and cost. People, rules and responsibility decide whether the answer can actually happen, how fast, and at what hidden cost.
- The strong answer turns the rule into a number inside the recommendation.
- People: who has to change what they do? How are they paid and measured today?
- Rules: does this need a competition review, a licence or customer consent for data?
- Responsibility: does this touch labour, safety or supply chain standards that customers, lenders or the law care about?
Key idea
Most cases are decided by revenue and cost. People, rules and responsibility decide whether the answer can actually happen, how fast, and at what hidden cost. Add them as a short, numbered check, not as a long list of worries.
What to ask
- People: who has to change what they do? How are they paid and measured today? Do we have enough people, and how long does hiring take?
- Rules: does this need a competition review, a licence or customer consent for data? How long will that take?
- Responsibility: does this touch labour, safety or supply chain standards that customers, lenders or the law care about?
What to calculate
- Manager roles and cost from spans and layers.
- What a pay scheme gives the employee against what it costs the company.
- Adoption at each step and the value lost at the biggest drop.
- Hires needed: growth plus leavers, and the lead time.
- Market share and HHI change for a merger; fine caps as a share of turnover.
- Compliance cost against the revenue or profit it protects.
Worked case
A grocery chain buys its rival
The prompt
A fictional Saudi grocery chain with 28 percent of its city's market wants to buy a rival with 17 percent. It expects to save 1 percent on combined purchases of SAR 6 billion a year and to remove a duplicate regional management layer of 40 roles costing SAR 400,000 each. The competition authority may require it to sell 15 overlapping stores that earn SAR 2 million profit each. The rival's 2 million loyalty members agreed to the rival's use of their data only, so the buyer must ask again; it expects 60 percent to agree, and values each usable member at SAR 10 of profit a year (illustrative numbers). What is the deal worth a year, and what would you tell the client?
The structure
- Yearly value = buying savings + layer savings minus remedy loss, plus data value, then the people and rules checks
- Combined share: how hard will the review be?
- Synergies: buying and management layer
- Key: Remedy: profit lost from stores sold
- Data: value of members who agree again
Working it through
1. Combined share
28 plus 17 percent.
Combined share (percent):28 + 17 = 452. Buying savings
1 percent of SAR 6,000 million.
Buying savings (SAR million a year):6,000 × 0.01 = 603. Layer savings
40 roles at SAR 400,000.
Management layer savings (SAR million a year):40 × 400,000 ÷ 1,000,000 = 164. Net synergies after the remedy
Selling 15 stores loses SAR 30 million of profit.
Net synergies (SAR million a year):60 + 16 - 15 × 2 = 465. Data value
60 percent of 2 million members at SAR 10 each.
Loyalty data value (SAR million a year):2,000,000 × 0.6 × 10 ÷ 1,000,000 = 12
The recommendation
The deal is worth about SAR 58 million a year: SAR 46 million of synergies after a likely store sale, plus SAR 12 million from loyalty data. Three conditions decide whether that arrives. First, a 45 percent share means a long review and probably a remedy, so plan for the store sale rather than hope to avoid it. Second, the SAR 16 million layer saving needs a clear new structure and pay that rewards the combined business, or managers will protect their old teams. Third, the data value depends on asking the rival's members for consent properly; using their data without it would breach Saudi data law, with fines of up to SAR 5 million per violation.
Risks: The authority could block the deal at 45 percent share; Staff of the bought chain may leave during the uncertainty.
Next steps: Map overlapping stores to size the likely remedy; Design the combined organisation and pay scheme before closing.
What to say: sample lines
- "Before we count the synergies, a 45 percent combined share means a long competition review and probably selling some stores, so I have taken SAR 30 million off the savings."
- "The sales team is paid on revenue, so discounting is rational for them. I would change the commission to gross margin and test it in a few stores."
- "The system works for the 45 percent who use it fully. The value gap is adoption, and the biggest drop is between weekly log-in and full use."
- "Growth of 1,000 people with 15 percent attrition means hiring about 2,600, starting four to five months before we need them."
- "This supplier upgrade pays back in two and a half years because it keeps our largest customer; the cheaper loan is a small bonus."
The client asks: "Should we merge with our main rival?" How do you bring in the rules?
Weaker answer
List every possible legal risk at the end ("there could be antitrust issues, data issues, labour issues") without saying which matter or what they cost.
Stronger answer
Give the value case first, then one line on rules with a number: "Combined we would hold about 45 percent, so expect an in-depth review of several months and a likely remedy such as selling overlapping stores. I have cut the synergies by that amount; the deal still adds about SAR 58 million a year."
Why the stronger answer wins: The strong answer turns the rule into a number inside the recommendation. The weak answer sounds careful but gives the client nothing to decide with.
Related case types for full practice: Organization and post-merger integration (spans, layers and synergy tracking after a deal), Mergers, acquisitions, and due diligence (where competition review and remedies change the value), and Sustainability and decarbonization (the carbon side of ESG). The industry briefs for banking, telecom and retail show which licences and rules matter most in each industry.
Read the banking briefIn a cost-cutting case, where do people questions usually belong?
Which is the best way to mention regulation in a recommendation?
Sources for this lesson (2)
- Recognized public explanations of case-interview concepts and terms
- Saudi Data and AI Authority (SDAIA): Personal Data Protection Law, English translation, Article 36 fines (official)
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