Difficult interview questions and answers: what to say about weaknesses, gaps and pay

Difficult interview questions and answers get much easier once you know what the interviewer is really checking. Questions about your weakness, a gap in your CV, why you left a job or what pay you want are not traps. Each one checks something simple: are you honest, do you learn, and will you fit the team. Below are the hard questions tradespeople worry about most, the reason behind each one, and a short answer you can change to fit your own work.

Why these questions feel hard, and what the interviewer wants

The Australian Government's job interview advice says interviews often include questions about you and behavioural questions (questions about how you handled real situations in the past).

The good news: these questions repeat. Government careers sites in Australia, New Zealand and the UK list the same group: strengths, weaknesses, why you left, pay, a time you failed and why they should hire you. Prepare one honest answer for each.

We cover two of the big ones in their own guides: the 60-second "tell me about yourself" answer and how to answer "why do you want to work in this country?". This page covers the rest.

The hard questions at a glance

"What are your strengths?"

The interviewer wants strengths that matter for this job, not a list of nice words. The Australian Government's advice is to talk about strengths that are relevant to the job and how you would use them in the role, with examples from work, study or volunteering.

A simple answer could be: "My strength is fault finding. Last year a customer's car had a warning light that two other workshops could not fix. I checked the wiring step by step and found a broken earth wire behind the dash."

"I am hardworking" proves nothing; a short story does. Choose the strength the job ad asks for.

If talking about yourself feels like boasting, our step-by-step guide to the "what are your strengths?" interview answer has sample answers for four trades and humble wording that still sounds clear.

"What are your weaknesses?"

Many people hide a strength inside this answer: "I work too hard." It sounds rehearsed.

The Australian Government's advice is to name a real weakness that is relevant to the job and say how you are trying to improve it. New Zealand's Tahatū careers site says something similar: talk about your strengths, then about how you overcome your weaknesses.

Choose a weakness that is true but not dangerous for the job. Safer choices for many tradespeople are English for paperwork, a new software system, or one type of machine you have used less.

A simple answer could be: "My written English is slower than my spoken English, so job reports take me longer. I practise writing a short report every evening, and I keep a list of common words for my trade. It gets faster each month."

"Why did you leave your last job?"

The Australian Government's advice is clear: do not criticise any of your past employers, because it can reflect poorly on you.

Keep your reason short and point it forward, to what you want next: more responsibility, a new type of work, or a move overseas.

A simple answer could be: "I worked there for four years and learned a lot. Now I want to work on bigger commercial jobs, and this role gives me that chance."

If you were let go because the company closed or the work ran out, say so in one sentence.

"Can you explain this gap in your CV?"

A gap is a time when you were not working, for example while you cared for a parent, studied or waited for a visa. Tahatū advises explaining the gap briefly and honestly, saying how you used the time, and keeping the answer on how you are ready for a new job now.

A simple answer could be: "I stopped work for eight months to care for my father after his operation. During that time I finished a short welding course at night. He is well now, and I am ready to work full time."

Never invent a job to fill a gap. Before the interview, make sure your CV dates are correct and match what you say. A tool like Build AI CV can help you set out your work history clearly, with a short line that explains the gap.

"What are your salary expectations?"

The Australian Government's advice makes this simple. If the job ad shows a salary range, give an answer inside that range that fits your level of experience. If the ad shows no salary, you can ask what range is on offer.

A simple answer could be: "The ad shows a range for this role. With my experience on heavy diesel engines, I think the middle of that range is fair. I am happy to talk about it."

"Tell me about a time you failed" and other past-event questions

The UK's National Careers Service lists "have you ever failed at a task?" and "when have you faced a challenging situation?" among its common questions.

These are behavioural questions. Government careers sites in Australia, New Zealand and the UK suggest the STAR method:

• Situation: where you were and what was happening
• Task: what you had to do
• Action: what you did, step by step
• Result: what happened, and what you learned

The National Research Council Canada tells its own candidates to use "I" statements, not "we" statements.

A simple answer could be: "On a house job I fitted a door frame before checking the floor level. The door would not close properly. I told my supervisor straight away, took the frame out and refitted it the next morning. Now I check levels before I fix anything in place."

A mistake you fixed shows honesty and learning. For the "what would you do if" type, which asks about the future, use our 4-step answer for trade scenario questions instead.

"Where do you see yourself in 5 years?" and "Why should we hire you?"

With the first question, the employer wants to know if you will stay and grow. Talk about growing in your trade with them, for example becoming a senior mechanic who helps train apprentices.

For "why should we hire you?", read the job ad again before the interview. Pick two things it asks for and give proof of each. A simple answer could be: "You need someone who can work alone on site and keep clean records. I ran my own small jobs for three years, and I kept a job sheet for every one."

To show more than words, some tradespeople also share a candidate profile on Talent Tabloid that shows their skills and work history.

Questions an interviewer should not ask

Sometimes a question is hard because it should not be asked at all. In Australia, the Fair Work Act protects people from discrimination for reasons such as age, race, religion, pregnancy and family or carer's responsibilities, and this protection covers people applying for a job.

The Australian Human Rights Commission gives the example of a panel asking a candidate whether she has children. If the employer uses that answer to refuse the job, it could be discrimination.

In New Zealand, Employment New Zealand explains that it is unlawful to ask questions that show an intention to discriminate on grounds covered by the Human Rights Act 1993. In the UK, Acas says interview questions must not discriminate.

If a question feels too personal, stay calm and answer the real job need: "I can work the hours and the travel this role needs."

How to prepare for difficult questions in one week

1. Write the seven questions from the table above on one page.
2. For each one, write a short answer in simple English, with one true example from your work.
3. Say each answer out loud and time it. Most answers should take about a minute.
4. Practise with someone you trust, as the Australian Government's advice suggests.
5. Learn one phrase that buys thinking time. Tahatū suggests something like: "Oh, good question – let me think about this one."
6. On the last day, read the job ad again and adjust your strength and "why hire you" answers to match it.

Common mistakes with hard interview questions

• Learning answers word for word. The National Careers Service says to speak in a conversational way so you do not sound too rehearsed.
• Saying "I have no weaknesses". It sounds untrue. Name a small, real one and your plan to fix it.
• Blaming a past boss. Even a fair complaint makes the interviewer wonder what you will say about them.
• Guessing when you do not understand. It is better to ask the interviewer to repeat or explain the question. Read why your English does not need to be perfect.
• No questions of your own. Near the end you will usually be asked if you have any questions. Have two ready from our list of questions to ask an employer.

Practise the hard ones out loud

In the General Practice section, an interviewer asks a question on video, you answer out loud, and you get a score from 0 to 10 with what you did well, what to add and a stronger answer.

The marking does not take marks off for your accent, small grammar mistakes or simple words. The answer timer follows the English level you choose: 90 seconds at Foundation, 75 at Working and 60 at Fluent. When single answers feel steady, try a full mock interview. See how the practice works.

Rules and requirements can change. Check the official government website before you act.

Frequently asked questions

What is the hardest interview question for tradespeople?

For many second-language speakers it is "What are your weaknesses?", because it feels risky to admit a fault. Give a real weakness that is not about safety, then explain what you are doing to improve it.

Can I take time to think before I answer?

Yes. New Zealand's Tahatū careers site says you can take time to think about a question. A short pause and a phrase like "Let me think about that" is much better than a fast answer that misses the point.

How do I explain a long gap in my CV?

Be brief and honest about the reason, say what you did during that time, and finish with why you are ready to work now. Make sure the dates you give match your CV exactly, because employers may check them.

What if the interviewer asks about my age, children or religion?

In Australia and New Zealand these can be grounds of unlawful discrimination when they are used to make the hiring decision. Stay calm and answer the real job need, such as whether you can work the hours.

Key takeaways

• Hard questions repeat, so prepare one honest answer for each.
• Every strength needs a short example from your work.
• Name a real weakness and the action you are taking.
• Never blame a past employer; point your reason forward.
• Use STAR and "I" statements for past-event questions.
• Practise out loud until the points come easily, not the exact words.