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Interview · Janitor

Janitor interview questions, with what they test.

12 questions built from what the job actually involves: its core duties, the skills rated most important and the tools in use. Switch on practice mode to rehearse before you look.

12 questions · practice mode
Updated Nov 2, 2026 · Data: O*NET 31.0
Quick answer

Janitor interviews test whether you can do the core work, such as service, clean, or supply restrooms, and the skills rated most important for the role: active listening, speaking and coordination (O*NET). Prepare one true, specific story for each, with a result.

Had it 0Practise 0Practice mode
Q01Walk me through how you service, clean, or supply restrooms.Core duty
What they are really testing

Hands-on experience with one of the duties workers rate most important for janitors, and the judgment calls inside it.

Likely follow-ups
  • How does this connect to how you mix water and detergents or acids in containers to prepare cleaning…?
  • What went wrong the last time, and what did you change?
Answer approach
  1. Step 1Where you did it, how often and for whom
  2. Step 2Your steps in order, including how you used Microsoft Excel
  3. Step 3One judgment call you made, and why
  4. Step 4The result, with a number you can defend
Q02Walk me through how you clean building floors by sweeping, mopping, scrubbing, or vacuuming.Core duty
What they are really testing

Hands-on experience with one of the duties workers rate most important for janitors, and the judgment calls inside it.

Likely follow-ups
  • How does this connect to how you clean windows, glass partitions, or mirrors, using soapy water or…?
  • What went wrong the last time, and what did you change?
Answer approach
  1. Step 1Where you did it, how often and for whom
  2. Step 2Your steps in order, including how you used Microsoft Office software
  3. Step 3One judgment call you made, and why
  4. Step 4The result, with a number you can defend
Q03Walk me through how you monitor building security and safety by performing tasks such as locking doors after operating hours or checking electrical appliance use to ensure that hazards are not created.Core duty
What they are really testing

Hands-on experience with one of the duties workers rate most important for janitors, and the judgment calls inside it.

Likely follow-ups
  • How does this connect to how you requisition supplies or equipment needed for cleaning and maintenance…?
  • What went wrong the last time, and what did you change?
Answer approach
  1. Step 1Where you did it, how often and for whom
  2. Step 2Your steps in order, including how you used Microsoft Outlook
  3. Step 3One judgment call you made, and why
  4. Step 4The result, with a number you can defend
Q04Walk me through how you notify managers concerning the need for major repairs or additions to building operating systems.Core duty
What they are really testing

Hands-on experience with one of the duties workers rate most important for janitors, and the judgment calls inside it.

Likely follow-ups
  • How does this connect to how you dust furniture, walls, machines, or equipment?
  • What went wrong the last time, and what did you change?
Answer approach
  1. Step 1Where you did it, how often and for whom
  2. Step 2Your steps in order, including how you used Microsoft Word
  3. Step 3One judgment call you made, and why
  4. Step 4The result, with a number you can defend
Q05Walk me through how you follow procedures for the use of chemical cleaners and power equipment to prevent damage to floors and fixtures.Core duty
What they are really testing

Hands-on experience with one of the duties workers rate most important for janitors, and the judgment calls inside it.

Likely follow-ups
  • How does this connect to how you clean and polish furniture and fixtures?
  • What went wrong the last time, and what did you change?
Answer approach
  1. Step 1Where you did it, how often and for whom
  2. Step 2Your steps in order, including how you used Microsoft Excel
  3. Step 3One judgment call you made, and why
  4. Step 4The result, with a number you can defend
Q06Tell me about a repair that was harder than it first looked.Repairing
What they are really testing

Practical problem-solving and persistence. Repairing is rated 2.0 of 5 for this job, +0.3 against the average occupation (O*NET).

Answer approach
  1. Step 1What broke
  2. Step 2Why it was harder
  3. Step 3How you solved it
  4. Step 4Pick the example from the core work, for instance when you had to service, clean, or supply restrooms
Q07Tell me about your routine for maintaining equipment.Equipment Maintenance
What they are really testing

Preventive habits that avoid breakdowns. Equipment Maintenance is rated 2.0 of 5 for this job, +0.3 against the average occupation (O*NET).

Answer approach
  1. Step 1The equipment
  2. Step 2Your schedule
  3. Step 3What you check
  4. Step 4Pick the example from the core work, for instance when you had to clean building floors by sweeping, mopping, scrubbing, or vacuuming
Q08How do you decide which tool or equipment to use for a job?Equipment Selection
What they are really testing

Matching tools to the task, safety and cost. Equipment Selection is rated 2.0 of 5 for this job, +0.3 against the average occupation (O*NET).

Answer approach
  1. Step 1The job
  2. Step 2The options
  3. Step 3How you chose
  4. Step 4Pick the example from the core work, for instance when you had to monitor building security and safety by performing tasks such as locking doors…
Q09Walk me through how you found the cause of a problem that was not obvious.Troubleshooting
What they are really testing

Systematic diagnosis rather than guessing. Troubleshooting is rated 2.1 of 5 for this job, +0.1 against the average occupation (O*NET).

Answer approach
  1. Step 1The symptom
  2. Step 2What you ruled out first
  3. Step 3How you found the cause
  4. Step 4Pick the example from the core work, for instance when you had to notify managers concerning the need for major repairs or additions to building…
Q10Describe how you operate and control the main equipment or systems in this job.Operation and Control
What they are really testing

Safe, correct operation under real conditions. Operation and Control is rated 2.0 of 5 for this job, -0.2 against the average occupation (O*NET).

Answer approach
  1. Step 1The equipment
  2. Step 2Your routine
  3. Step 3A non-routine moment
  4. Step 4Pick the example from the core work, for instance when you had to follow procedures for the use of chemical cleaners and power equipment to…
Q11Which of these have you used: Microsoft Excel, Microsoft Office software, Microsoft Outlook? Tell me about a recent piece of work with one of them.Tools
What they are really testing

Real, recent use of the tools janitors depend on, not a list of names.

Likely follow-ups
  • How would you get up to speed on Microsoft Word if you haven't used it?
Answer approach
  1. Step 1Name the tool and the task, e.g. Microsoft Excel for service, clean, or supply restrooms
  2. Step 2What you did with it
  3. Step 3A problem you solved with it
  4. Step 4What the output was used for
Q12Why do you want to work as a Janitor?Motivation
What they are really testing

Whether you understand what the job really involves, and whether that is what you want.

Answer approach
  1. Step 1Name the part of the work you like: e.g. service, clean, or supply restrooms
  2. Step 2Evidence you have done it or something close
  3. Step 3Why this employer
  4. Step 4Where you want to grow

Data Duty, skill, tool and conditions questions are built from O*NET data for this occupation. Advice Answer approaches are our coaching advice.

Answer framework

Two structures that work

SSituationOne sentence of context.
TTaskWhat you owned.
AActionWhat you did, in your words.
RResultWhat changed, with a number if true.
Questions to ask them

End the interview well

Advice

  • What does a strong first 90 days look like for this janitor role?
  • Which part of the work takes the most time in a typical week?
  • How is performance measured here?
  • What tools and systems does the team use?
FAQ

Common questions

What are common Janitor interview questions?
Expect questions about the core duties (service, clean, or supply restrooms), about active listening and speaking, and about the tools you have used. This page lists 12 with what each one tests.
How should I answer behavioral questions?
Use a short structure such as Situation, Task, Action, Result, and end with a specific, true result.
Method

How this page is built

Questions are generated from O*NET 31.0 data for the occupation: its core tasks, the skills with the highest importance ratings, the tools reported, and work-context ratings. The interviewer intent and answer approach are TryHired coaching advice.

What this page can't tell you
  • What a specific employer will ask.
  • Technical tests or licensing exams for the role.
Sources
  1. O*NET 31.0 Database, U.S. Department of Labor, Employment and Training Administration (USDOL/ETA), used under the CC BY 4.0 license. TryHired selected, ranked and combined the data; O*NET is not responsible for these pages.

How TryHired builds this data: sources, methods and downloads. Spotted an error? Report a correction.

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