Custodial Supervisor
Posted Sep 4, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about the largest custodial crew you have supervised. How did you assign the work?
What they are checking: Whether they have real experience planning and directing a crew across a site.
Tell me about a time you had to discipline someone. How did you handle the conversation?
What they are checking: Whether they address performance fairly, document it and keep the person's dignity.
How do you make sure your crew always has the supplies and equipment they need?
What they are checking: Whether they plan inventory ahead so supply shortages don't hurt quality.
Tell me about a time you raised a problem with your boss before it became a customer complaint.
What they are checking: Whether they report shortcomings early, which the role explicitly requires.
What would you do
Three people call off on the same night. How do you make sure the customer still gets what the contract promises?
What they are checking: Whether they can reprioritize, redistribute work and communicate honestly with the customer about any gaps.
The customer says a contractor did poor work in their building. How do you handle it?
What they are checking: Whether they inspect the work, document what they see and raise shortcomings with their manager.
A good employee tells you a coworker is making the job miserable. What do you do?
What they are checking: Whether they take complaints seriously, look into them fairly and protect a good team.
About the work
How do you run a quality and safety inspection, and what do you do with what you find?
What they are checking: Whether they inspect against clear standards, report needed repairs and follow up until problems are fixed.
Which OSHA rules come up most often in custodial work, and how do you keep your crew compliant?
What they are checking: Whether they know hazard communication, PPE, slips and bloodborne pathogens well enough to train and enforce them.
How do you decide whether a new cleaning product or machine is worth switching to?
What they are checking: Whether they test new supplies and equipment on real results and cost, as the posting asks.
How do you train a new custodian so they work safely from their first shift?
What they are checking: Whether they have a structured way to train on tasks, chemicals and PPE before someone works alone.
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Practice this out loudThe full job description
As published by SBM Management.