General Manager Interview Case: A Multi-Function Performance Gap
A complete interview case for testing how a management candidate integrates financial, customer, operational and people evidence under uncertainty.
Advanced Executive Program in Management & Business Administration develops connected capability across strategy, finance, customers, operations, technology and people. This practical interview case can be used before enrollment, during executive study or inside an authorized workplace exercise.
General manager interviews can over-reward polished narratives and familiarity with interview conventions. This case tests whether the candidate reconciles evidence, asks useful questions, creates options and defines a responsible first action.
Assessment-pack standard
How can an interview test integrated general-management judgement rather than presentation confidence alone? Use the tool on this page to produce a candidate case pack, interviewer prompts and evidence-based scoring rubric. Start with a bounded decision, retain the evidence behind every material claim, and distinguish what is known from what is assumed. The tool is designed to improve management preparation and review; it does not replace the authority, specialist judgement or procedures required by an employer.
Testing integration rather than presentation fluency
The interview case creates a compact common language for those connections. It does not force every organization into the same answer. Instead, it makes local definitions, evidence, constraints and accountability visible. That is useful when a management team agrees on the goal but disagrees about the route, or when confident recommendations rely on incompatible assumptions.
Candidate brief, probes and scoring anchors
| Element | Management purpose | Minimum evidence |
|---|---|---|
| Case brief | Provide a bounded business situation, decision deadline and known constraints. | The candidate should not need hidden industry trivia to reason well. |
| Evidence pack | Include financial, customer, operating and people data with deliberate uncertainty. | Conflicting signals reveal how the candidate handles ambiguity. |
| Clarifying questions | Observe what the candidate asks before recommending action. | Strong questions identify definitions, populations, timing and authority. |
| Diagnosis | Assess whether facts, hypotheses and root causes are separated. | A plausible story is not enough without a test plan. |
| Options and decision | Require alternatives, trade-offs, recommendation and reversibility. | The candidate should connect strategy with operational feasibility. |
| Scoring discipline | Use anchored criteria and independent notes before discussion. | The rubric reduces, but cannot eliminate, interviewer bias. |
1. Case brief
Provide a bounded business situation, decision deadline and known constraints. The candidate should not need hidden industry trivia to reason well.
Review question: What observable evidence would confirm that case brief is working in the selected scope, and who has authority to respond when it is not?
2. Evidence pack
Include financial, customer, operating and people data with deliberate uncertainty. Conflicting signals reveal how the candidate handles ambiguity.
Review question: What observable evidence would confirm that evidence pack is working in the selected scope, and who has authority to respond when it is not?
3. Clarifying questions
Observe what the candidate asks before recommending action. Strong questions identify definitions, populations, timing and authority.
Review question: What observable evidence would confirm that clarifying questions is working in the selected scope, and who has authority to respond when it is not?
4. Diagnosis
Assess whether facts, hypotheses and root causes are separated. A plausible story is not enough without a test plan.
Review question: What observable evidence would confirm that diagnosis is working in the selected scope, and who has authority to respond when it is not?
5. Options and decision
Require alternatives, trade-offs, recommendation and reversibility. The candidate should connect strategy with operational feasibility.
Review question: What observable evidence would confirm that options and decision is working in the selected scope, and who has authority to respond when it is not?
6. Scoring discipline
Use anchored criteria and independent notes before discussion. The rubric reduces, but cannot eliminate, interviewer bias.
Review question: What observable evidence would confirm that scoring discipline is working in the selected scope, and who has authority to respond when it is not?
Administer the case consistently
Step 1: Issue the brief
Give the candidate 20 minutes with the core evidence pack. The immediate output is a comparable starting point.
Step 2: Invite questions
Allow ten minutes for clarification without inventing unavailable facts. The immediate output is evidence of problem framing.
Step 3: Request diagnosis
Ask for the three most important observations and uncertainties. The immediate output is a prioritized view.
Step 4: Request options
Ask for at least two feasible responses and a do-nothing baseline. The immediate output is a decision set.
Step 5: Choose an action
Require a recommendation for the next 30 days. The immediate output is a bounded first move.
Step 6: Challenge it
Introduce one new constraint and ask what changes. The immediate output is adaptability without improvising facts.
Step 7: Score independently
Interviewers record evidence against anchored criteria. The immediate output is a defensible assessment.
Step 8: Debrief
Separate candidate evidence from preference or style similarity. The immediate output is a fairer selection discussion.
Case data: multifunction performance gap
A EUR 40 million service unit has grown revenue by 12%, but contribution margin fell from 29% to 24%. Renewal fell three points, service rework doubled and voluntary turnover is concentrated in one specialist team. Sales reports a strong pipeline and requests immediate hiring. The candidate must recommend the next 30 days.
| Evidence or choice | Current entry | Interpretation | Management response |
|---|---|---|---|
| Financial integration | Reconciles revenue growth, mix, rework and margin | Treats revenue growth as success without checking economics | 0-4 |
| Customer judgement | Segments renewal and service evidence | Uses one average or anecdote | 0-4 |
| Operating diagnosis | Tests capacity, quality and promise-to-delivery flow | Assumes hiring is the root solution | 0-4 |
| People judgement | Protects workload and investigates concentrated turnover | Blames individuals or ignores capacity | 0-4 |
| Decision quality | Chooses a reversible action with owners and measures | Offers a broad transformation slogan | 0-4 |
Assessment validity risks
- Using undisclosed facts to trap candidates.
- Scoring charisma as judgement.
- Rewarding one preferred framework.
- Failing to define authority and time horizon.
- Accepting a recommendation without assumptions.
- Changing the case between candidates without documenting it.
Panel questions
Is there one correct answer?
No. Several responses can be defensible when they use the evidence, respect constraints and define how uncertainty will be reduced.
How long should the exercise take?
A 45- to 60-minute discussion plus preparation is usually enough for this version.
Can candidates use a calculator or notes?
Yes. The case evaluates reasoning and verification, not mental arithmetic or memorization.
Should the case decide the hire?
No. It should complement structured interviews, validated role requirements, references and other relevant evidence.
Assessment-method evidence and limits
The U.S. Office of Personnel Management defines a structured interview as a systematic method for asking job-related behavioural or hypothetical questions and evaluating responses with common standards. Its public Structured Interview Guide describes question development, probes, rating scales, interviewer guidance and pilot testing. The assessment pack on this page follows those process principles while using an original fictional general-management case. It is not an OPM assessment and is not validated for a particular employer.
Standardization does not mean robotic interaction. Candidates may need clarification or accommodation, and probes can be defined in advance. The important control is equivalent opportunity and a common meaning, with evidence recorded against job-related anchors. A panel should not reward a preferred style, penalize reasonable assumptions where the data are intentionally incomplete, or introduce helpful facts only to candidates it likes.
Local employers must perform job analysis and obtain qualified employment, equality, accessibility, privacy and record-retention advice. The pack must not be used to solicit trade secrets or confidential information. AI-generated scoring should not be added without a separately governed assessment of validity, transparency, bias, data protection and human authority. Preserve case versions so candidate results from materially different briefs are not treated as directly comparable.
Pilot and assessor check
Pilot the case with people who understand the target work and with at least one person outside the case design team. Record preparation time, questions asked, calculations attempted, ambiguous facts and whether the 10-minute recommendation is feasible without specialist industry knowledge. Revise any clue that rewards guessing the designer’s preferred story.
Give assessors sample responses representing the four anchor levels. Require independent scoring and evidence notes before discussion. Compare differences greater than one point and determine whether the cause is anchor ambiguity, missed evidence or different standards. Repeat after revisions; do not treat consensus reached through seniority pressure as reliability.
Test the candidate instructions for accessibility and plain language. Verify that permitted aids, breaks or alternative formats do not change the competency being assessed. Decide in advance how incomplete responses are handled when time expires. Preserve the same core probes and avoid penalizing a candidate who asks a legitimate clarification question.
Before launch, the selecting authority signs the case version, role relevance, weighting, critical requirements, retention and decision procedure. After a cycle, review scoring patterns and candidate feedback under qualified oversight. Update only through version control, and never use later edits to reinterpret an earlier candidate’s result.
Panel notes should quote or paraphrase job-relevant evidence, not diagnose personality. Replace “not strategic” with the observed gap, such as “recommended hiring before testing the repeat-demand hypothesis and did not identify the decision owner.” Replace “strong executive presence” with specific communication evidence. Concrete notes improve calibration, candidate feedback and later audit while reducing the space for affinity and style preferences to drive an unexplained result.
Scoring a sample response
Suppose a candidate identifies margin decline, repeat demand and specialist overload as a connected hypothesis; requests customer-level profitability and queue data; proposes a capped two-week process test; names the operations director as owner; and defines quality, workload and customer stop rules. They also misstate one percentage-point change but correct it when prompted.
A panel might score frame 3, evidence 3, integration 4, quantitative reasoning 3, feasibility 3, learning/governance 4 and communication 3. The recorded evidence explains each rating. The corrected arithmetic error does not automatically create a critical fail because the candidate recognized and repaired it; an invented source or knowingly incompatible unit would be different.
Now consider a polished candidate who recommends six hires immediately, calls all ten measures “red,” promises margin recovery and provides no owner or review rule. Presentation fluency cannot compensate for weak evidence, integration and feasibility. Score the observed dimensions before discussing overall suitability.
The panel should not sum mechanically if the role requires a minimum level in governance or quantitative reasoning. Apply the pre-agreed decision rule, document any additional evidence needed and preserve the case notes. A model response is a calibration aid, not the only correct route through an uncertain business problem.
Evidence capture during the case
Assign each assessor a primary dimension but allow all assessors to record relevant evidence. Use a note sheet with timestamp or case section, candidate statement or calculation, linked dimension and provisional interpretation. Require the observation before the rating. “Confident,” “not senior enough” and “good fit” are not evidence.
During panel discussion, begin with the lowest critical dimension and the strongest contradictory evidence. Ask whether the candidate had the same opportunity to demonstrate the behaviour and whether a probe changed the response. A candidate who recognizes an unsupported assumption after a neutral probe may show learning; a candidate who simply adopts the interviewer’s proposed answer has not demonstrated independent reasoning.
Alternative case conditions
Pilot one controlled data variation to test whether the rubric rewards reasoning rather than a memorized conclusion. For example, provide all candidates in a later version with evidence that specialist hiring lead time is six months. A strong response should update the feasible options and may place greater weight on demand reduction, sequencing or temporary qualified capacity. The scoring anchors remain stable; the model logic changes with the evidence.
Do not mix scores across versions without recording the changed condition. If the case is reused internally, restrict access to the interviewer guide and rotate the numerical scenario while preserving difficulty and competency demands.
Candidate debrief boundary
Before use, decide what feedback can be provided. A useful debrief refers to the assessed dimensions and observed evidence, such as failure to distinguish hypotheses from facts or strength in linking customer and capacity signals. Do not reveal other candidates’ information or claim that one fictional recommendation is universally correct.
Retain notes only for the authorized period. Correct factual recording errors through the approved process and preserve the correction. The case should create comparable job-relevant evidence while respecting the candidate as a participant, not as an experimental subject.
Complete assessment pack
This work sample tests whether a candidate can integrate strategy, finance, customers, operations and people under uncertainty. Use it only after job analysis confirms relevance. Give every candidate the same brief, time, data and core probes; train assessors; record evidence before overall impressions; and follow applicable employment, accessibility and privacy requirements.
Candidate brief
You have joined Northbridge Services, a fictional multi-site business, as interim general manager. The board expects profitable growth and service stability. August results are below. You have 60 minutes to prepare a 10-minute recommendation and 20 minutes for questions. You may make assumptions, but label them. Your task is to:
- diagnose the most important performance gap;
- identify evidence limitations and information you would request;
- propose no more than three management actions for the next 30 days;
- explain financial, customer, operational and people consequences;
- state the decision you need, the owner and how you would learn whether it worked.
| Measure | Plan | Actual | Prior period | Note |
|---|---|---|---|---|
| Revenue | €4.80m | €5.05m | €4.72m | One large campaign added volume |
| Contribution margin | 31% | 26% | 29% | Cost classification unchanged |
| Eligible-customer renewal | 92% | 90% | 92% | Enterprise segment is 86% |
| On-time completion | 94% | 88% | 91% | Site B is 79% |
| First-pass yield | 93% | 84% | 89% | Two campaign services are 71% |
| Repeat-contact rate | 12% | 20% | 15% | Definition changed six months ago, not this period |
| Overtime / paid hours | 6% | 14% | 9% | Concentrated in specialist queue |
| Voluntary attrition, annualized | 11% | 17% | 13% | Small population; three departures |
| Open vacancies | 8 | 13 | 9 | Five are specialist roles |
| Major complaints | 8 | 15 | 10 | Nine reference delay or rework |
Additional facts: the campaign has two months remaining; the sales director proposes discounting to retain the large customer; operations requests six hires; finance wants a general cost freeze; Site B’s manager believes the standard process does not fit the campaign work. No customer-level profitability, queue-level demand forecast or exit-interview synthesis is supplied.
Candidate instructions and safeguards
The case is fictional. Do not ask the candidate for confidential information from a current or former employer. Permit reasonable calculation aids. Provide an accessible format and an equivalent adjustment where required. Tell the candidate that polished slides are not necessary; assessment concerns reasoning and communication, not graphic design.
Interviewer guide
Start timing after the candidate has confirmed they can open and read the materials. During preparation, answer only clarification questions that do not add evidence. During presentation, do not rescue an incomplete answer. Ask the same core probes in the same order:
- Which conclusion is best supported, and which is still only a hypothesis?
- What would you decide today, and what would you defer?
- How does your proposal affect contribution margin and customer risk?
- Which role or capacity constraint could make the plan infeasible?
- What evidence could change your recommendation within two weeks?
- Who owns the decision, and what is the stop or escalation trigger?
Allowed neutral probes: “What in the case supports that?”, “Please explain the calculation,” and “Which assumption are you making?” Do not introduce a new fact for one candidate unless all candidates receive it under a documented version of the case.
Behaviourally anchored scoring rubric
Score each dimension from 1 to 4 before the panel discussion.
| Dimension | 1 — weak evidence | 2 — partial | 3 — effective | 4 — strong integrated evidence |
|---|---|---|---|---|
| Frame and prioritization | Restates many symptoms; no decision | Selects an issue but boundary is unclear | Frames a decision and distinguishes urgent from important | Shows how frame changes options and names authority |
| Evidence and uncertainty | Treats all numbers as facts or invents data | Notices one gap | Labels hypotheses, gaps and compatible comparisons | Identifies decision-critical uncertainty and efficient test |
| Cross-functional integration | Optimizes one function | Mentions several functions separately | Explains relationships and trade-offs | Builds a coherent mechanism across value, customer, flow and people |
| Quantitative reasoning | Misreads units or makes unsupported precision | Calculates one variance | Uses correct directional calculations and limitations | Tests sensitivity or scenarios and explains decision impact |
| Action feasibility | Produces generic actions | Names actions without capacity or sequence | Provides owners, sequence, resources and 30-day scope | Protects operations, dependencies and reversibility with gates |
| Learning and governance | No measure or review | Has a metric but no rule | Defines signals, review date and escalation | Separates leading/outcome/harm measures and preserves authority |
| Communication | Unstructured or evasive | Understandable but incomplete | Concise recommendation with evidence and trade-offs | Adapts under challenge without hiding uncertainty |
Critical fail conditions should be job-related and agreed in advance. Examples may include knowingly inventing decisive evidence, ignoring an explicit safety or legal constraint, or persisting with a calculation after recognizing that its units are incompatible. Do not create a fail condition during panel debate because one candidate challenged a preferred answer.
Model-response logic, not a single “correct” answer
A strong candidate observes that revenue growth is not translating into contribution margin or reliable delivery. The campaign may have created low-quality demand, rework and specialist overload, but the data do not yet prove causality. Site B, campaign services, repeat contacts and overtime are plausible connected signals. Renewal weakness in the enterprise segment and complaint content make delay risky.
A defensible 30-day response could include: first, freeze definitions and produce a queue/customer/service profitability and flow analysis within five working days; second, stabilize Site B and the specialist queue through bounded staffing or scheduling changes while protecting quality; third, run a controlled correction for the two campaign services and renegotiate future campaign intake criteria. The candidate should resist a blanket hiring decision, indiscriminate cost freeze or discount before understanding the value and constraint.
A clear decision request might be: authorize a €40,000 stabilization and diagnostic envelope, assign the operations director as owner, and require a scale/hire recommendation after two weeks. Leading signals: repeat demand, first-pass yield and specialist backlog. Outcomes: on-time completion, contribution margin and enterprise renewal risk. Harm measures: complaint severity, excessive workload and failure elsewhere caused by redeployment. Stop or escalate if major complaints rise further, quality declines during the test or the authorized capacity is exceeded.
Another response can score well if its assumptions are explicit and the evidence-to-action logic is sound. The panel should not punish a candidate for choosing a different reasonable bounded test.
Panel decision procedure
Each assessor records quotes or observable actions beside each score. Then the panel compares dimensions, not likeability. Discuss large rating differences by returning to anchors and evidence. Do not average automatically if a critical dimension is below the job requirement. Record what additional evidence another interview stage must obtain. Keep selection records under the authorized retention policy.
Pilot the case with several informed people before use. Check completion time, ambiguous data, unintended specialist knowledge, accessibility and whether anchors discriminate relevant performance. Revise the case version and do not mix candidate scores across materially different versions without a documented method.
The Advanced Executive Program in Management & Business Administration develops the integrated executive capabilities this assessment pack is designed to sample.