Employment Interviewing

Introduction and Context

The employment interview is a planned exchange of information used to assess a person’s suitability for a job and to provide the candidate with realistic information about the organisation and role. Although interviews are familiar and apparently simple, effective interviewing is a professional assessment activity. Poorly designed interviews can produce unreliable decisions, disadvantage protected groups, expose employers to legal claims, and lead to costly turnover.

Contemporary recruitment therefore treats the interview as one component of a broader selection system. Its quality depends on job analysis, clear competencies, standardised questions, trained assessors, consistent evidence requirements, lawful decision rules, and accurate documentation. The central principle is that candidates should be assessed against job-related requirements rather than personal impressions.

Learning Objectives

By the end of this chapter, you should be able to:

• explain the purpose, structure and limitations of employment interviews;
• distinguish structured, unstructured, competency-based, behavioural and situational interviews;
• prepare a lawful interview plan from a job description and competency framework;
• write effective behavioural and situational questions with appropriate probes;
• construct anchored rating scales and apply them consistently;
• organise panel roles, records and candidate communication;
• recognise and reduce common interviewer biases; and
• evaluate interview decisions ethically, fairly and defensibly.

1. The Nature and Purpose of an Employment Interview

An interview serves several related purposes:

1. Assessment: gathering evidence about knowledge, skills, behaviours, motivation and likely job performance.
2. Information exchange: explaining duties, working conditions, development opportunities and expectations.
3. Candidate experience: demonstrating professionalism, respect and organisational culture.
4. Risk control: confirming information that is relevant to employment and identifying issues requiring lawful follow-up.
5. Decision support: integrating interview evidence with other valid selection information.

An interview is not a casual conversation. A conversation may change direction according to personal interests; an interview should follow a documented plan. Nor is it an opportunity to seek private information unrelated to work. Questions should be necessary, proportionate and directly connected to the role.

Interview quality is often discussed using three ideas:

• Reliability: whether the process produces reasonably consistent evaluations across interviewers, candidates and occasions.
• Validity: whether interview evidence is meaningfully related to job performance or another legitimate selection criterion.
• Fairness: whether candidates receive comparable opportunities to demonstrate relevant capability and are not disadvantaged by irrelevant or discriminatory factors.

A structured interview generally improves reliability because all candidates are asked comparable questions and evaluated using common standards. Structure does not require a mechanical or unfriendly interaction. Interviewers may build rapport while preserving consistency.

2. Main Types of Interview

2.1 Structured and unstructured interviews

In an unstructured interview, questions and evaluation vary substantially between candidates. It may feel natural, but it makes comparisons difficult and allows irrelevant impressions to influence decisions.

A structured interview specifies, in advance:

• the competencies or criteria to be assessed;
• the questions and permitted probes;
• the order or timing of the interview;
• the rating scale and evidence standards; and
• the decision process and documentation requirements.

A semi-structured format may allow limited follow-up questions while retaining common core questions. This is often practical for certificate-level recruitment, provided that flexibility does not become unequal treatment.

2.2 Competency-based interviews

A competency is a cluster of knowledge, skills, abilities, behaviours and other characteristics associated with effective performance. Competencies should be observable and job-related. Examples include customer communication, accuracy, teamwork, problem-solving and safety awareness.

A competency-based interview maps each question to a defined competency. For example, a customer-service role may assess:

Competencies must not be vague substitutes for personality preferences. “Professional fit” should be translated into observable requirements such as respectful communication, cooperation or adherence to organisational values.

2.3 Behavioural interviews

Behavioural interviewing is based on the proposition that past behaviour, especially behaviour in relevant circumstances, can provide evidence about future performance. The candidate is asked to describe an actual event rather than a general opinion.

A useful response structure is STAR:

• Situation: the context or problem;
• Task: the candidate’s responsibility;
• Action: what the candidate personally did; and
• Result: the outcome, learning or subsequent improvement.

Example question: “Tell us about a time when you had to deal with an unhappy customer. What was your responsibility, what did you do, and what happened?”

The interviewer should distinguish “I” from “we.” A team outcome is relevant, but the assessment requires evidence of the candidate’s own contribution. Behavioural questions are less useful when candidates have no relevant experience; in that situation, situational questions may provide a fairer opportunity.

2.4 Situational interviews

A situational interview presents a realistic hypothetical problem and asks what the candidate would do. It assesses judgment, procedural knowledge, priorities and anticipated behaviour.

Example: “Suppose two customers require urgent assistance while the telephone is ringing and your colleague is away. How would you prioritise the work?”

Situational questions should reflect actual job demands, not artificial puzzles. Strong answers normally identify the immediate risk, clarify priorities, communicate appropriately, follow policy and seek help where necessary. Interviewers should avoid treating one preferred style as the only acceptable answer when several lawful and effective approaches exist.

2.5 Other formats

• Panel interview: two or more interviewers assess one candidate. It can improve breadth of judgment but may intimidate candidates and create conformity among panel members.
• Sequential interview: a candidate meets assessors separately. It provides several assessments but increases administration and the risk that later assessors are influenced by earlier opinions.
• Technical or work-sample interview: candidates explain or perform job-related tasks. This may provide stronger evidence than self-report alone.
• Remote interview: conducted through digital communication. It requires attention to access, connectivity, privacy, recording consent and reasonable adjustments.
• Group interview: several candidates are observed together. It can assess interaction but must prevent dominant personalities from being mistaken for competence.

3. Designing a Structured Interview

Step 1: Begin with job analysis

The interview should be derived from the work, not from an interviewer’s intuition. Review the job description, essential duties, performance standards, working conditions and legally relevant requirements. Identify which requirements can genuinely be assessed through questions and which are better assessed through tests, references or work samples.

Step 2: Select a manageable competency set

A short interview cannot measure everything. Select the competencies that are both important and assessable. For a certificate-level role, four to six competencies may be sufficient. Define each competency behaviourally and specify what effective, acceptable and weak performance look like.

Step 3: Create a question blueprint

A blueprint links questions to competencies and prevents overemphasis on one topic.

Questions should be clear, concise and free from unnecessary jargon. Avoid double-barrelled questions such as “How did you plan the work and persuade your colleagues and resolve the complaint?” Such a question may produce an incomplete answer and makes scoring unclear.

Step 4: Prepare standardised probes

Permitted probes improve evidence without changing the assessment standard. Examples include:

• “What was your specific responsibility?”
• “What action did you personally take?”
• “What was the result?”
• “What would you do differently now?”
• “How did you know the problem was resolved?”

Probes should clarify the answer, not coach the candidate toward a preferred response.

Step 5: Plan the interview sequence

A practical sequence is:

1. welcome and introductions;
2. explanation of the process and approximate duration;
3. confirmation of any reasonable adjustment or accessibility need;
4. standardised questions and probes;
5. candidate questions;
6. explanation of next steps and expected timescale; and
7. immediate independent scoring before panel discussion.

The opening should establish rapport without creating an informal conversation that advantages candidates who share the interviewer’s background or communication style.

4. Lawful and Ethical Questioning

Employment law differs by jurisdiction, so recruiters must follow applicable legislation, regulatory guidance and organisational policy. The general rule is that questions should be job-related, necessary and asked consistently. Protected characteristics and private matters should not be explored unless a specific lawful basis exists and the information is genuinely necessary for the employment process.

Potentially inappropriate topics may include age, pregnancy or family plans, religion, political beliefs, disability unrelated to job requirements, ethnic background, marital status and other protected or private characteristics. Instead of asking, “Do you have children who may interfere with work?”, ask, “This role requires scheduled evening shifts. Are you able to meet this published requirement?” The second question concerns availability, not family circumstances.

Questions about disability and health require particular care. An employer may need to establish whether a candidate can perform essential duties, with reasonable adjustments where required, but should not seek unnecessary medical information. A practical question is: “This role involves standing for periods of up to two hours. Can you perform this essential duty, with reasonable adjustments if applicable?” The precise lawful wording must be checked locally.

Other safeguards include:

• use the same core questions for all candidates;
• explain any job-related selection test in advance;
• provide reasonable adjustments and accessible formats;
• protect interview records and restrict access;
• obtain consent before recording or using automated transcription;
• do not request confidential information from a current employer improperly; and
• retain records only for the period required by law and policy.

Interviewers should not ask candidates to disclose trade secrets, confidential client information or personal data about others. Ethical interviewing respects dignity even when the candidate is not selected.

5. Rating Scales and Decision Rules

A rating scale translates evidence into a consistent judgment. A simple five-point anchored scale is useful:

Anchors must describe evidence, not personality. “Likeable” is not a valid anchor; “explains information clearly, checks understanding and resolves the issue within procedure” is more defensible.

A panel may calculate a total score by adding competency ratings, but arithmetic should not conceal a critical failure. For example, failure on a mandatory safety competency may disqualify a candidate even if other scores are high. The decision rule should therefore specify:

• minimum overall standard;
• minimum score for essential competencies;
• treatment of missing evidence;
• how tied scores are resolved; and
• when additional assessment or verification is required.

If weighted scoring is used, weights must be established before interviews. A weighted score can be represented as:

Here, S is the overall score, wᵢ is the predetermined weight for competency i, and rᵢ is the candidate’s rating for that competency. The weights are dimensionless proportions and must sum to 1. This method is appropriate only when ratings use a common scale and the organisation has decided that compensating strengths and weaknesses is acceptable. A mandatory minimum rule may be applied separately.

Illustrative example: Suppose communication, teamwork and reliability receive weights of 0.40, 0.30 and 0.30, and a candidate receives ratings of 4, 3 and 5 on a five-point scale. Then:

The weighted score is 4.00 out of 5. This calculation does not prove that the interview is valid; it only summarises ratings produced by the chosen method.

Interviewers should make notes about evidence, not conclusions. “Candidate described checking stock records, correcting the error and notifying the supervisor” is useful. “Poor attitude” is vague and difficult to audit.

6. Panel Procedures and Interviewer Conduct

Before the interview, the panel should:

• review the job analysis, competencies and scoring anchors;
• agree roles, timing and permitted probes;
• complete a short calibration exercise using a sample answer;
• declare conflicts of interest;
• arrange accessibility and technology checks; and
• agree how notes and scores will be stored.

During the interview, one member may lead, another may monitor time and a third may record evidence. All panel members should listen actively and avoid interruptions. Silence after a candidate finishes can be useful; rushing to fill it may prevent a fuller answer.

Afterward, each assessor should score independently before discussion. The chair should invite evidence for each rating and challenge unsupported impressions. The panel should not decide by majority popularity or allow the most senior member to end the discussion without examining evidence. A final record should show the criteria applied, scores, significant evidence and decision rationale.

A professional closing explains the next steps, who will make contact and when a decision is expected. Candidates should not be promised employment or given misleading feedback.

7. Bias and Its Reduction

Interview bias may enter through question selection, rapport, interpretation, scoring or panel discussion. Common forms include:

• Similarity bias: preferring candidates who resemble the interviewer in background, interests or communication style.
• Halo effect: allowing one favourable characteristic to influence all ratings.
• Horns effect: allowing one unfavourable characteristic to dominate judgment.
• First-impression bias: fixing an opinion early and interpreting later evidence to support it.
• Contrast effect: judging a candidate against the previous candidate rather than against the standard.
• Confirmation bias: seeking evidence that supports an initial belief.
• Stereotyping: applying assumptions about a group to an individual.
• Affinity bias: confusing social comfort or rapport with competence.
• Recency and primacy effects: overvaluing the last or first information remembered.

No single technique eliminates bias, but several controls reduce it:

1. use job analysis and standardised questions;
2. define observable anchors before interviews;
3. ask all candidates the same core questions;
4. take contemporaneous evidence-based notes;
5. score independently before discussion;
6. use more than one trained assessor where practical;
7. separate assessment from informal conversation;
8. monitor outcomes for unexplained group differences; and
9. review whether criteria or procedures create adverse impact.

Bias reduction is not achieved by pretending that interviewers have no judgment. It is achieved by making judgment more transparent, evidence-based and accountable.

8. Technology and AI in Interviewing

Digital scheduling, online interviews, transcription and structured interview platforms can improve administration. They can also introduce new risks. Automated systems may reproduce historical bias, penalise accents or disabilities, infer sensitive characteristics, or obscure how a recommendation was produced.

Organisations should not treat an AI-generated ranking as an objective decision. Before using such a tool, they should establish its purpose, test performance across relevant groups, assess privacy and security, provide human oversight, communicate appropriately with candidates, and offer a route for correction or review. Automated video analysis based on facial expression or voice characteristics is especially problematic when its scientific validity and necessity are uncertain.

A sound principle is that technology may support scheduling, documentation and consistent workflow, but accountable human decision-makers remain responsible for lawful and evidence-based selection.

9. Illustrative Case: Riverside Community Clinic

Background

Riverside Community Clinic is recruiting a reception assistant. The role requires accurate appointment scheduling, respectful communication, confidentiality, teamwork and the ability to prioritise urgent requests. The clinic previously used informal interviews led by one manager.

Problem

Different candidates were asked different questions. The manager tended to favour confident conversationalists, even when their answers lacked evidence. Complaints arose that candidates with quieter communication styles were not given equal opportunity. Interview records contained conclusions such as “not a good fit.”

Analysis

A review showed that the process lacked job-related competencies, common questions, defined scoring anchors and independent assessment. The clinic also asked some candidates about family responsibilities, although the information was not necessary to assess availability.

Approach and solution

The clinic identified four competencies: patient communication, accuracy and confidentiality, prioritisation, and teamwork. It prepared two behavioural and two situational questions, with standard probes. One question asked candidates to describe a time they corrected an appointment error; another presented a scenario involving an urgent patient request and a ringing telephone.

A three-person panel used a five-point anchored scale. Each member scored independently before discussion. The panel replaced “fit” with documented evidence, asked all candidates the same core questions, and provided an opportunity to request reasonable adjustments. A minimum score was required for confidentiality and accuracy because these were essential responsibilities.

Outcome

The revised process produced clearer records and more comparable evidence. A candidate who initially appeared quiet demonstrated excellent accuracy, careful escalation and respectful communication. The panel selected the candidate on the basis of evidence rather than conversational confidence. The clinic also identified that a short work-sample exercise would strengthen assessment of scheduling accuracy.

Learning points

The case illustrates that structure does not remove human judgment; it directs judgment toward relevant evidence. It also shows why interview design should be reviewed alongside other selection methods and why vague concepts such as “fit” should be replaced with observable behaviours.

10. Challenges and Limitations

Interviews remain imperfect. Candidates may rehearse answers, exaggerate achievements or misunderstand a question. Interview performance can also be affected by anxiety, language, disability, unfamiliarity with the format and unequal access to coaching. Behavioural questions may favour candidates with extensive prior employment, while situational questions depend partly on knowledge of organisational procedures.

Structured interviews require preparation and training, and rigid scripts may prevent necessary clarification. Panels can create scheduling costs and may still share the same bias. Rating scales can create false precision, especially when anchors are weak. A high interview score is not proof of future performance; validity is improved when the interview is combined with suitable work samples, tests, references and probationary support.

The appropriate response is not to abandon interviews but to use them within a coherent selection system. Employers should periodically compare interview ratings with later performance, review candidate feedback, examine adverse impact and revise questions when evidence shows that a criterion is not useful or fair.

Best-Practice Checklist

Before the interview, confirm that:

• the criteria come from job analysis;
• essential and desirable requirements are distinguished;
• questions are lawful, clear and linked to competencies;
• scoring anchors and decision rules are written in advance;
• panel members are trained and conflicts are declared; and
• accessibility, privacy and technology arrangements are ready.

During the interview:

• welcome the candidate respectfully;
• explain the process;
• ask common core questions;
• use neutral probes;
• record evidence rather than impressions; and
• allow the candidate to ask questions.

After the interview:

• score independently before discussion;
• apply the predetermined rules;
• document the rationale;
• protect records; and
• communicate next steps consistently.

Chapter Summary

Employment interviewing is a structured assessment and information-exchange process, not an informal conversation. Effective interviews begin with job analysis and use a limited set of observable competencies. Structured, competency-based, behavioural and situational approaches can provide useful evidence when questions, probes, ratings and decision rules are consistent. Behavioural questions examine relevant past actions, while situational questions examine responses to realistic hypothetical circumstances.

Lawful interviewing requires job-related questions, respect for privacy, reasonable adjustments, consistent treatment and careful record management. Anchored rating scales improve consistency, but scores must not conceal critical failures or create false precision. Panel members should be trained, score independently and base conclusions on documented evidence. Standardisation, diverse assessors, calibration and monitoring help reduce similarity, halo, stereotyping, confirmation and other biases.

Technology can improve administration but does not remove the need for human accountability, privacy protection and validation. Interviews have limitations and should normally form part of a broader selection system. The professional standard is a process that is relevant, fair, evidence-based, transparent and continuously reviewed.

Key Terms

Anchored rating scale: A scale whose points are described by observable evidence standards.

Behavioural interview: An interview asking for evidence of actual past behaviour.

Bias: A systematic influence that can distort judgment or disadvantage candidates.

Competency: A job-related combination of knowledge, skill, ability and behaviour.

Competency-based interview: An interview in which questions and ratings are linked to defined competencies.

Contrast effect: Judging a candidate against another candidate rather than against the standard.

Halo effect: Allowing one favourable characteristic to influence unrelated judgments.

Job analysis: Systematic examination of duties, requirements and performance standards.

Panel interview: An interview conducted by more than one assessor.

Probe: A planned follow-up question used to clarify or expand evidence.

Rating anchor: A description of the evidence associated with a particular score.

Reasonable adjustment: A change that enables an eligible person to participate fairly in the selection process.

Situational interview: An interview using realistic hypothetical job scenarios.

STAR method: Situation, Task, Action and Result structure for describing experience.

Structured interview: An interview with predetermined criteria, questions, procedures and scoring.

Unstructured interview: An interview in which questions and evaluation vary substantially between candidates.

Validity: The extent to which an assessment supports accurate conclusions for its intended purpose.

Reliability: The consistency of assessment results across relevant occasions or assessors.

Work sample: A job-related task used to obtain direct evidence of capability.

Review Questions

Short Answer Questions

1. What is the difference between a structured and an unstructured interview?
2. What does each letter in the STAR method represent?
3. Why should interview questions be derived from job analysis?
4. Give two examples of interviewer bias.
5. What is the purpose of an anchored rating scale?

Long Answer Questions

1. Explain how an organisation can design a competency-based interview from a job description.
2. Discuss the differences between behavioural and situational interviews and identify when each may be useful.
3. Explain the main legal and ethical principles governing employment interview questions.
4. Describe effective procedures for preparing, conducting and reviewing a panel interview.
5. Evaluate the benefits and limitations of using technology and AI in employment interviewing.

Analytical / Application Questions

1. A manager says that a candidate is “not a good fit” but provides no evidence. Analyse the problem and propose a more defensible assessment process.
2. Design four interview questions for a retail service assistant, linking each question to a competency and specifying the evidence an assessor should seek.
3. A panel gives a candidate high scores overall but a rating of 1 for an essential safety competency. Using the principles in this chapter, explain how the panel should make and document its decision.

Multiple Choice Questions with Answers

Question 1

Which feature most clearly distinguishes a structured interview?

A. The interviewer changes questions according to personal interest

B. All candidates are assessed using predetermined criteria and scoring standards

C. The interview focuses mainly on informal conversation

D. The candidate chooses which competencies will be discussed

Correct Answer: B. All candidates are assessed using predetermined criteria and scoring standards

Question 2

In the STAR method, what does the “A” represent?

A. Assessment

B. Achievement

C. Action

D. Adjustment

Correct Answer: C. Action

Question 3

Which question is most appropriate for assessing past customer-service behaviour?

A. Do you think customers are usually difficult?

B. Tell us about a time you dealt with an unhappy customer and what you did

C. Would you generally say you are friendly?

D. Do you have any family responsibilities?

Correct Answer: B. Tell us about a time you dealt with an unhappy customer and what you did

Question 4

Which practice best reduces first-impression bias?

A. Allowing the interviewer to decide within the first five minutes

B. Scoring candidates against documented criteria after collecting evidence

C. Selecting the most confident candidate

D. Discussing candidates before taking notes

Correct Answer: B. Scoring candidates against documented criteria after collecting evidence

Question 5

Which is the most job-related alternative to asking about childcare?

A. Who looks after your children?

B. Are you planning to start a family?

C. Can you meet the published requirement for evening shifts?

D. Will your family support your employment?

Correct Answer: C. Can you meet the published requirement for evening shifts?

Question 6

What is the main purpose of a standardised probe?

A. To coach the candidate toward the preferred answer

B. To clarify comparable evidence from candidates

C. To replace the main interview question

D. To test the candidate’s private circumstances

Correct Answer: B. To clarify comparable evidence from candidates

Question 7

In the weighted-score example, weights of 0.40, 0.30 and 0.30 are used with ratings of 4, 3 and 5. What is the resulting score?

A. 3.20

B. 3.70

C. 4.00

D. 4.50

Correct Answer: C. 4.00

Question 8

Why should panel members score independently before discussion?

A. To prevent any need for a final decision

B. To reduce conformity and influence from dominant panel members

C. To ensure every candidate receives a different standard

D. To eliminate the need for interview notes

Correct Answer: B. To reduce conformity and influence from dominant panel members

Question 9

Which statement about AI in interviewing is most accurate?

A. AI recommendations are automatically objective

B. Human oversight, privacy protection and validation remain necessary

C. AI removes the need for lawful questions

D. Automated facial analysis is always valid

Correct Answer: B. Human oversight, privacy protection and validation remain necessary

Question 10

A candidate receives strong scores in all areas but fails an essential confidentiality competency. What should the panel do?

A. Ignore the competency because the total is high

B. Apply the predetermined minimum rule for essential competencies

C. Increase the candidate’s other scores

D. Replace the rating with an informal impression

Correct Answer: B. Apply the predetermined minimum rule for essential competencies