The STAR Method for Competency-Based Interviews: A Complete Guide

The STAR method is one of the most effective ways to structure answers in a competency-based interview. It helps you move beyond general statements and give the interview panel clear evidence of what you actually did, how you approached a situation, and what you achieved.

For candidates applying to the United Nations, ICC and other international organisations, understanding how to use STAR can make a significant difference. Competency-based interviews are designed to assess specific behaviours and competencies, so your answer needs to demonstrate those behaviours through concrete examples.

What Is the STAR Method?

STAR stands for Situation, Task, Action and Result. It provides a simple structure for answering behavioural and competency-based interview questions.

Instead of simply saying that you are a good team player, for example, you can describe a real situation in which you had to work with colleagues, explain what you were responsible for, describe the actions you took, and show what happened as a result.

The four elements are:

• Situation: What was happening? Give enough context for the panel to understand the circumstances.
• Task: What were you responsible for? What needed to be achieved?
• Action: What did you actually do? Focus on your individual contribution.
• Result: What happened? Explain the outcome, impact or lesson learned.

The most important part is usually the Action. Your answer should give the panel evidence of the behaviour or competency they are assessing, rather than simply describing what the team did.

Why the STAR Method Works for Competency-Based Interviews

Competency-based interviews are fundamentally about evidence. The panel is not simply trying to determine whether you believe you possess a particular quality. It wants to understand whether your past behaviour demonstrates the competency required for the position.

This is particularly important in international organisations, where vacancies often identify specific competencies such as teamwork, communication, planning and organising, achieving results, professionalism or handling uncertainty.

A strong STAR answer allows you to demonstrate those competencies through a real example.

For example, instead of saying:

"I am very good at managing competing priorities."

You could describe a situation in which you actually had several urgent assignments, explain how you prioritised them, describe the decisions you made, and show how you delivered the required work.

That gives the panel something it can assess.

The Four Parts of the STAR Method

1. Situation

Start by setting the scene. Explain the circumstances that led to the situation you are going to discuss.

The Situation should be brief and relevant. You do not need to provide every detail of the background.

A useful Situation usually answers questions such as:

• Where were you working?
• What was happening?
• What made the situation significant or challenging?

For example:

"While working on a time-sensitive judicial project, our team received several new requests shortly before an important deadline."

That is enough context to understand the problem without spending two minutes explaining the entire project.

2. Task

The Task explains what needed to be done and what your responsibility was.

This distinction is important. The Situation describes the broader circumstances; the Task focuses on your role within them.

For example:

"I was responsible for coordinating the legal research and ensuring that the draft was ready for review within three days."

Keep the Task concise. In many strong answers, the Situation and Task together take less time than the Action.

3. Action

The Action is the most important part of your answer.

This is where you explain what you personally did.

Avoid relying too heavily on "we". The panel needs to understand your contribution, decisions and behaviour.

Instead of:

"We discussed the problem and decided to change our approach."

say:

"I reviewed the competing deadlines, identified which tasks were dependent on others, and proposed a revised allocation of responsibilities to the team."

The second version gives the panel evidence of specific behaviours.

When describing your Action, focus on:

• the decisions you made;
• the steps you took;
• how you communicated;
• how you dealt with difficulties;
• why you chose a particular approach; and
• how your actions contributed to the outcome.

4. Result

Finish by explaining what happened as a consequence of your actions.

Where possible, make the result concrete.

For example:

"The work was submitted on time, the review identified no substantive issues, and the approach was subsequently adopted for similar requests."

A good Result can also include what you learned or what you would do differently in the future.

Do not simply end your answer after describing what you did. The panel needs to know whether your actions were effective.

How Long Should a STAR Answer Be?

A strong competency-based interview answer will often take around two to three minutes, although the appropriate length depends on the question, position and interview format.

There is no requirement to divide your time equally between the four elements.

A useful rule of thumb is:

• Situation: 15–20%
• Task: 10–15%
• Action: 50–60%
• Result: 15–20%

The key principle is simple: spend most of your time explaining what you did and why.

How to Choose the Right Example

One of the biggest challenges in competency-based interviews is choosing the right experience.

Your example does not need to be extraordinary. A strong example is one that gives you enough material to demonstrate the competency clearly.

When selecting an example, ask yourself:

• Did I personally play a meaningful role?
• Was there a genuine challenge, problem or objective?
• Did I have to make decisions or take action?
• Does the example demonstrate the competency being assessed?
• Can I explain the result clearly?
• Can I tell the story without relying on confidential information?

A relatively ordinary professional situation can be a much better interview example than an impressive achievement that does not actually demonstrate the competency.

Build a Bank of STAR Examples Before Your Interview

Do not wait until you see the interview question to start thinking of examples.

Instead, prepare a small bank of experiences that you can adapt to different competencies.

Useful categories include:

• a difficult professional challenge;
• a successful project;
• a conflict with a colleague;
• a situation involving competing priorities;
• a time when you had to influence someone;
• a mistake or failure;
• a situation involving uncertainty or change;
• a successful collaboration;
• a difficult decision; and
• a situation in which you received or gave difficult feedback.

You should not memorise complete answers word for word. Instead, remember the key facts, decisions, actions and results so that you can tell the story naturally.

Match Your STAR Answer to the Competency Being Assessed

A common mistake is preparing a good STAR story but failing to connect it clearly to the competency in the question.

The same experience may demonstrate several competencies, but the emphasis should change depending on what the panel is assessing.

For example, suppose you managed a difficult project involving several colleagues.

If the competency is Teamwork, you might focus on how you built cooperation, handled disagreement and supported colleagues.

If the competency is Achieving Results, you might instead emphasise how you prioritised tasks, solved obstacles and delivered the final outcome.

If the competency is Communication, you might focus on how you adapted your communication to different stakeholders and ensured that everyone understood the objective.

The story can remain the same; the evidence you highlight should change.

STAR Method Example for a UN Competency-Based Interview

Imagine the panel asks:

"Tell us about a time when you had to manage competing priorities."

A weak answer might be:

"I am very organised and I am used to working under pressure. In my current position, I regularly have several tasks at the same time, so I prioritise them and make sure everything is completed."

The answer sounds positive, but it provides very little evidence.

A stronger answer would use a real example:

Situation: "In my previous position, I was working on several urgent assignments when I was asked to take on an additional time-sensitive request."

Task: "I needed to complete the new assignment without compromising the deadlines or quality of the work already underway."

Action: "I first mapped the deadlines and identified which tasks were genuinely urgent and which could be moved. I discussed the revised priorities with my supervisor, reorganised my work into shorter blocks and completed the tasks with the closest dependencies first. I also informed the relevant colleagues of the revised timeline so that there were no surprises."

Result: "All of the urgent assignments were delivered within the required deadlines. The experience also led me to adopt a more systematic approach to prioritisation when several requests arrive simultaneously."

This answer gives the panel considerably more evidence to assess.

What to Do When You Do Not Have a Perfect Example

You do not need to find an example that matches the question perfectly.

Look for an experience that demonstrates the underlying behaviour being assessed.

For example, if you are asked about leadership but have never formally managed staff, you could discuss a situation in which you coordinated colleagues, took responsibility for a difficult task, influenced others or helped a team achieve an objective.

Leadership does not necessarily require formal managerial authority.

Similarly, examples can come from different professional contexts, provided they are relevant and allow you to demonstrate the required competency.

Common STAR Interview Mistakes

1. Spending too long on the background. The panel needs enough context to understand the story, not a complete history of the situation.
2. Talking mostly about "we". Make your individual contribution clear.
3. Describing actions without explaining your reasoning. Where relevant, explain why you chose a particular approach.
4. Giving a vague result. Explain what actually happened and, where possible, quantify the outcome.
5. Memorising answers word for word. This can make your delivery sound rehearsed and makes it difficult to adapt to follow-up questions.
6. Using the same answer for every competency. A single experience can sometimes be adapted, but the evidence should correspond to the competency being assessed.
7. Forgetting the question. A well-told story is not necessarily a good answer if it does not address what the panel actually asked.

How to Prepare for a Competency-Based Interview Using the Vacancy Announcement

The vacancy announcement is one of your most important preparation tools.

1. Identify the competencies. Make a list of the competencies explicitly mentioned in the vacancy announcement.
2. Understand the behaviours. Read the relevant competency definitions and behavioural indicators carefully.
3. Find examples. Identify at least one strong professional example for each important competency.
4. Build your STAR structure. Reduce each example to the essential Situation, Task, Action and Result.
5. Anticipate question variations. Prepare for different ways the panel could ask about the same competency.
6. Practise aloud. Speaking through your answer is very different from writing it down. Practise until you can explain the example naturally.

This approach is much more effective than memorising a list of generic interview answers because it prepares you for the competencies and behaviours actually relevant to the position.

Practise With Questions Tailored to Your Vacancy

The best preparation is not simply answering random interview questions. It is practising questions that reflect the competencies, responsibilities and level of the position you are actually applying for.

PanelPrep · IO helps you practise competency-based interviews using the vacancy announcement you are applying for. Generate realistic questions, structure your answers using STAR and practise against the competencies relevant to the role.

Start free practice →

STAR Method Interview Checklist

Before your interview, make sure you can:

• identify the competencies in the vacancy announcement;
• explain what each competency means;
• identify at least one strong example for each major competency;
• describe each example using Situation, Task, Action and Result;
• clearly distinguish your contribution from the team's contribution;
• explain the reasoning behind important decisions;
• describe the result or impact; and
• adapt your examples to different questions.

Frequently Asked Questions

What does STAR stand for in an interview?

STAR stands for Situation, Task, Action and Result. It is a framework for structuring answers to behavioural and competency-based interview questions.

Is STAR used in UN competency-based interviews?

The UN uses competency-based interviews and advises candidates to structure examples around the situation, actions taken and results achieved. The precise terminology and interview format can vary between organisations, so candidates should always follow the guidance applicable to the specific organisation and vacancy.

How long should a STAR answer be?

As a general guide, aim for around two to three minutes for a substantive competency-based answer. The appropriate length will depend on the question and interview format.

What if I cannot think of a good example?

Look for situations that demonstrate the underlying behaviour rather than trying to find a perfect match. Professional examples from projects, difficult situations, collaboration, competing priorities or mistakes can often be adapted to different competencies.

Can I use the same example for different competencies?

Yes. A single experience can demonstrate several competencies. However, you should adapt the emphasis of your answer so that the evidence clearly addresses the specific competency being assessed.

Final Takeaway

The STAR method is not about telling a perfectly rehearsed story. It is a way of making your professional experience clear, structured and assessable.

For competency-based interviews, focus on the evidence: what happened, what you were responsible for, what you personally did, why you did it, and what happened as a result.

Prepare your examples around the competencies in the vacancy, practise them aloud, and learn to adapt your STAR stories to different questions.