Site supervisor interview questions, with a scoring guide
Runs the job site day to day: crews, trades, safety, quality and the daily log. Here are 22 questions for a site supervisor interview. Each comes with a follow-up and a 1 to 5 scoring guide so you can compare candidates fairly.
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Questions specific to the site supervisor role
Role-specific
Walk me through your first hour on site on a typical morning.
Follow-up: What goes into your safety talk that day?
1 WeakGets people started and sorts out problems as they come.
3 SolidHands out tasks and does a quick safety reminder.
5 StrongWalks the site for hazards, holds a site-specific safety talk, confirms crew and trade plans for the day, and checks deliveries.
Role-specific
A subtrade shows up on a day the site isn't ready for them. What do you do?
Follow-up: How do you stop it happening again?
1 WeakSends them home and says nothing to anyone.
3 SolidFinds them something to do and moves on.
5 StrongFinds useful work if safe, updates the schedule, tells the PM, and confirms dates with trades a few days ahead.
Role-specific
Tell me about a time you had to stop work because someone was doing something unsafe.
Follow-up: How did the worker react, and how did you handle it?
1 WeakHas never had to, or let it go to keep the job moving.
3 SolidTold them to stop and fix it.
5 StrongStopped the work right away, explained why, fixed the cause, documented it, and followed up with the crew.
Role-specific
Tell me about a time you found work that wasn't done to the drawings or the spec. What happened?
Follow-up: Was it caught before it got covered up?
1 WeakLet it go or covered it up.
3 SolidHad it fixed once it was noticed.
5 StrongCaught it on inspection before the next trade, had it corrected, logged the deficiency, and flagged cost or schedule impact.
Behavioural questions by skill
Behavioural questions ask about something the person actually did. Past behaviour is a better guide than "what would you do" answers alone.
Safety and care
Works safely and looks out for others.
Tell me about a time you noticed something unsafe at work. What did you do?
Follow-up: What happened after you reported it?
1 WeakIgnored it, or has never noticed anything.
3 SolidMentioned it to someone.
5 StrongMade it safe if they could, reported it, and followed up.
Describe a time you were asked to cut a corner on safety to save time.
Follow-up: What did you say?
1 WeakWent along with it.
3 SolidHesitated, then did it.
5 StrongSaid no respectfully and suggested a safe way to keep things moving.
What safety habits do you follow every shift without thinking about them?
Follow-up: Where did you pick those up?
1 WeakNone come to mind.
3 SolidA generic answer such as 'wear PPE'.
5 StrongSpecific habits that fit the kind of work.
Leading others
Gets the team through the shift and grows people.
Tell me about a time you had to get a group to finish a job on time.
Follow-up: How did you split the work?
1 WeakDid it all themselves, or it failed.
3 SolidGave instructions.
5 StrongSet clear roles, checked progress, and supported people.
Describe a time you had to address a coworker's performance or behaviour.
Follow-up: What did you say?
1 WeakAvoided it.
3 SolidAddressed it harshly, or only through the boss.
5 StrongAddressed it privately and specifically, then followed up.
Tell me about someone you trained. How did they do?
Follow-up: How did you know they were ready?
1 WeakNever trained anyone.
3 SolidShowed them once.
5 StrongTrained them step by step and checked progress.
Organizing and time management
Plans the work and meets deadlines.
Walk me through how you plan a typical work day.
Follow-up: What do you do when the plan falls apart?
1 WeakNo plan.
3 SolidA loose plan.
5 StrongA clear system, such as a list or calendar, and how they adjust it.
Tell me about a time you had several deadlines at once.
Follow-up: How did you decide the order?
1 WeakMissed some without warning.
3 SolidMet them by working late.
5 StrongPrioritized, planned, and met them or flagged early.
Describe a system you use to keep track of tasks, orders or paperwork.
Follow-up: Show me how you'd use it on your first day here.
1 WeakNone.
3 SolidMostly memory.
5 StrongA reliable system with an example.
Problem solving
Works out the cause and fixes it properly.
Tell me about a problem at work that you solved without being told how.
Follow-up: How did you work out what was wrong?
1 WeakWaited to be told what to do.
3 SolidSolved it with a common fix.
5 StrongFound the cause and fixed it so it stayed fixed.
Describe a time something went wrong in the middle of a busy day. What did you do first?
Follow-up: Who did you tell, and when?
1 WeakPanicked or froze.
3 SolidCalled for help right away without trying anything.
5 StrongMade it safe, tried the obvious fixes, and escalated with clear information.
Tell me about a time you noticed a better way to do a routine task.
Follow-up: What happened when you raised it?
1 WeakNever looked for one.
3 SolidNoticed it but didn't act.
5 StrongSuggested or tested it and can describe the result.
Communication
Explains clearly and keeps people in the loop.
Tell me about a time you had to explain something complicated to someone who was new to it.
Follow-up: How did you know they understood?
1 WeakCan't explain clearly, even in the interview.
3 SolidExplained it but didn't check understanding.
5 StrongUsed plain words or examples and checked they got it.
Describe a time you had to give bad news to a customer, coworker or manager.
Follow-up: What did you say first?
1 WeakAvoided it or left it to someone else.
3 SolidDelivered it, but bluntly or late.
5 StrongDelivered it early and clearly, with a next step.
Tell me about a time a misunderstanding caused a problem at work. What did you learn?
Follow-up: What do you do differently now?
1 WeakBlames the other person entirely.
3 SolidFixed the issue with little reflection.
5 StrongFixed it and changed how they communicate, such as confirming in writing.
Handling conflict
Deals with friction directly and fairly.
Tell me about a time you had a conflict with a coworker. How was it resolved?
Follow-up: How is that working relationship now?
1 WeakBlames the other person; still unresolved.
3 SolidResolved when a manager stepped in.
5 StrongRaised it directly and privately and fixed the working relationship.
Describe a time you got criticism you thought was unfair.
Follow-up: What did you do with it?
1 WeakGot defensive and stayed upset.
3 SolidAccepted it quietly.
5 StrongAsked questions, took what was useful, and moved on.
Tell me about a time you had to work closely with someone difficult.
Follow-up: What did you do to make it work?
1 WeakAvoided them or clashed.
3 SolidTolerated them.
5 StrongFound a way to work together well.
Prescreen questions for site supervisor candidates
Ask these on a five-minute phone call or send them as a form before you book interviews.
- Are you legally entitled to work in Canada? (Yes / No)
- Which days and times are you available to work?
- When could you start?
- What pay are you looking for?
- What interests you about this job?
- How many years have you worked as a lead hand, foreman or site supervisor, and on what kind of projects?
- Do you have current first aid/CPR, WHMIS and supervisor safety training? (Yes, all three / Some of them / None yet)
- This role drives between sites. If we make an offer, are you willing to provide a current driver's abstract? (Yes / No)
How to score the answers
- Ask every candidate the same questions in the same order. That's what makes scores comparable.
- Write down what they did, not your impression. "Closed alone on a Saturday and restocked for the morning" beats "seems reliable".
- Score each answer from 1 to 5 against the guide under the question. A 3 is a solid, acceptable answer.
- Average the scores and read the notes behind any big gap between interviewers.
- Check references on the areas where you're least sure.
Questions to avoid
In Canada, hiring questions should be about the job. Human rights laws protect people from being treated differently because of things like their age, family status, disability, religion, race, place of origin, sex, sexual orientation or gender identity. Stay away from questions like these:
- "How old are you?" or "When did you finish high school?"
- "Do you have kids?" or "Are you planning a family?"
- "Where are you from originally?" (You can ask: "Are you legally entitled to work in Canada?")
- "Do you have any health problems?" (You can ask: "This job involves [a real duty]. Can you do that, with or without accommodation?")
This is general information, not legal advice. Rules vary by province.
Questions
What should I ask in a site supervisor interview?
Ask about the parts of the job that matter most: safety and care, leading others, organizing and time management, problem solving, plus role-specific questions such as "Walk me through your first hour on site on a typical morning." Ask every candidate the same questions so you can compare them fairly.
How do I score a site supervisor interview?
Score each answer from 1 to 5 against a short guide that describes a weak, solid and strong answer. Score what the person actually did in their example, not how confident they sounded. Then average the scores and read the notes behind any big differences.
What should I ask before interviewing a site supervisor?
Use a short prescreen: work eligibility, availability, start date, pay expectations and the must-haves for the role, such as "How many years have you worked as a lead hand, foreman or site supervisor, and on what kind of projects?"
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