How to Hire a Janitor for the Night Crew
The short answer: hire a night crew cleaner for two instincts. The first is knowing what to handle on the spot and what to pass to the supervisor, because nobody is there to ask at 11 p.m. The second is noticing what keeps going wrong in a building, like the restroom that is out of paper by three every afternoon, and reporting it so the supervisor can fix the cause. The first shift shows whether the candidate can clean to your scope sheet. Those two instincts decide your inspection scores and how often the facility manager calls.
The Bureau of Labor Statistics counts about 2,432,600 janitors and building cleaners and projects about 321,800 openings a year through 2035. For a commercial cleaning company, that means hiring nearly all the time, often for shifts the owner never sees.
The seat, in one paragraph
A strong night crew cleaner works the route sheet in order, cleans to the scope sheet, restocks from the supply closet and leaves each area ready for the morning. They notice what is different tonight, like a floor left in rough shape after an event or a restroom that ran out of supplies early, and they decide quickly whether it is theirs to handle or the supervisor's to hear about. They leave a clear note for anything outside the route. They finish on time, and the building looks the same every morning, whoever is on shift.
That description fits the Night Crew Cleaner and Janitor seats in most commercial cleaning companies. The Day Porter seat shares the core and adds tenants asking for things during business hours.
Instinct one: handle it or pass it
Night crew work happens without a supervisor in the room. Every night brings something the route sheet did not plan for. A cleaner who handles everything personally finishes late and does work nobody agreed to price. A cleaner who handles nothing leaves problems for the morning that five minutes would have fixed. The seat needs someone who can tell the difference quickly.
Interview question: "You're alone in an office building. The third-floor conference room, which isn't on tonight's route sheet, was left a mess after a catered event. You have two hours of route left. What do you do?"
Listen for: a decision and a note. A strong answer weighs the route, does what the company's rules allow, and leaves a clear note or message for the supervisor so the account manager can raise it with the facility manager. A weak answer either spends an hour on the conference room without telling anyone or walks past it and says nothing.
Instinct two: fixing what keeps causing it
A cleaner who only fixes what is in front of them restocks the same empty dispenser every night and never mentions it. A cleaner who notices that the same restroom runs out early, or that the same corner of the lobby is always muddy, tells the supervisor, and the supervisor changes the restock par or adds a mat. That is how inspection scores go up without adding hours.
Interview question: "For two weeks, the second-floor restroom has been out of paper towels by the time you arrive, and tenants have complained. What do you do?"
Listen for: a report that leads to a fix. A strong answer restocks, tells the supervisor about the pattern and suggests a change. A weak answer restocks every night and assumes someone else will notice.
What not to over-weight
Years of cleaning. Experience matters, but a cleaner who always worked with a supervisor on site may never have made these calls alone. Ask how much of their work was unsupervised.
Equipment certifications. Floor machines and chemicals can be trained. Check the certifications you need and look past them for instinct.
How they interview. Many excellent night crew cleaners say little in an interview. The supervised first shift shows you more.
A hiring process for the night crew seat
- Phone screen: shift availability, transportation, which buildings they can reach, pay range.
- Instinct assessment for the Night Crew Cleaner or Janitor seat, sent the same day.
- Interview built around where the candidate pulls away from the seat, using the two questions above plus the report's own questions.
- Supervised first shift with a supervisor or lead, against the scope sheet.
- References and your usual background check, then your decision.
Keep the same order for every candidate for the opening.
The first 90 days
If you hire a cleaner who knows what to pass along, give them an easy way to do it: a notes app, a shared log or a text line to the supervisor that someone actually reads the next morning.
If you hire someone who leans toward handling everything, walk the route sheet with them each week for the first month and agree on what is theirs and what goes to the supervisor.
Watch inspection scores and facility manager complaints by building. Those two numbers show whether the night crew is keeping the building the way the account expects.
How First Move Assessment reads this seat
First Move Assessment has a written standard for the Night Crew Cleaner seat, one of the commercial cleaning seats it covers. The report shows where the candidate sits on each of the five questions, including handling it or passing it and fixing what keeps causing the problem, a seat match from 0 to 100 with its margin of error (usually 9 to 12 points), the interview questions for anywhere the candidate pulls away from the seat, and a 90-day watch list. 72 and up lines up with the seat, 40 to 71 is mixed and worth a closer look, and under 40 does not line up. It does not measure cleaning skill, so pair it with the supervised first shift. It is not a background check or an integrity screen, so run your usual checks alongside it.
Frequently asked questions
What makes a good night crew cleaner?
Steady quality to the scope sheet, reliable attendance and two instincts: deciding quickly what to handle and what to pass to the supervisor, and noticing the problems that keep coming back so they get fixed at the cause.
How do I test a janitor before hiring?
A supervised first shift against the scope sheet shows the hands-on skill. An instinct assessment covers how the candidate handles the calls they will make alone. Use both.
What is the difference between a janitor and a day porter?
A janitor or night crew cleaner works the route after hours. A day porter works while the building is occupied, keeps common areas and restrooms up during the day, and handles requests from tenants. The seats share a core and differ in how much time they spend with people.
What questions should I ask a janitor in an interview?
Ask about the moments they will face alone: an area off the route sheet, a supply that keeps running out, a floor that needs more than the scope allows. Our guide to interview questions for trades hires has more.
What does the AI do?
Nothing. No AI is used when your candidate takes the assessment or when the report is made. Their answers are scored by a fixed formula. Every number that formula uses was set in advance and approved before use, and nothing in it is learned or adjusted by a computer from anybody's answers. Every written section of the report is a fixed template filled in from the numbers the formula produced. The same answers give the same result every time, and no candidate information is sent to any AI provider.
Why we left AI out. First, you can check it: every number in the report comes from arithmetic that returns the same answer every time it runs, and an AI model can give two different answers to the same question. Second, it does not drift: an AI model can be changed by its maker without notice, which would quietly change what your reports say, while this formula changes only when we publish a new version, and every report records the version that scored it. Third, your candidate's answers stay with us and are never handed to an AI company. Fourth, the law treats AI in hiring as a special case, and most of the cost of that lands on the employer who uses it.
What the law says. These are the main rules in force or already passed as of September 2026. It is general information, not legal advice.
New York City, Local Law 144 of 2021 (NYC Administrative Code section 20-870 and following; rules at 6 RCNY section 5-300). An employer may not use an automated employment decision tool unless it has had an independent bias audit within the past year, a summary of that audit is published, and candidates are given notice at least 10 business days before it is used. The rules cover tools built with machine learning, statistical modeling, data analytics or AI in which a computer at least in part picks the inputs or how much each one counts, in order to make the result more accurate.
Illinois, Human Rights Act as amended by Public Act 103-0804 (775 ILCS 5/2-102, in force since January 1, 2026). An employer must tell applicants and employees when it uses artificial intelligence in hiring and other employment decisions, may not use AI in a way that discriminates against a protected class, and may not use ZIP codes as a stand-in for one.
California, Civil Rights Council regulations on automated-decision systems (California Code of Regulations, title 2, in force since October 1, 2025). These cover any computational process that makes or helps make an employment decision, including one built on algorithms or statistics rather than AI. A tool that screens people out on a protected characteristic can be unlawful whatever it is built on, and employers must keep the related records for four years.
Colorado, Senate Bill 26-189 (in force from January 1, 2027, replacing the state's 2024 AI Act). It covers automated decision-making technology, meaning any technology that uses computation on personal data to produce scores or other output used in a decision about a person, with or without AI. Employers must give notice at the point of use, explain the tool's role within 30 days of an adverse decision, and offer human review and reconsideration on request.
Federal law. Title VII of the Civil Rights Act, the Americans with Disabilities Act and the Age Discrimination in Employment Act apply to every selection procedure, AI or not, and the Uniform Guidelines on Employee Selection Procedures (29 CFR Part 1607) set out how adverse impact is judged.
What that means for you. Leaving AI out keeps this tool clear of the parts of these laws written around AI and machine learning. It does not take it outside all of them. California and Colorado define the tools they cover by computation rather than by AI, so a fixed formula like this one can still fall within them, and federal law applies to every assessment. What applies to you depends on where you hire and how you use the report. Section 7 of the legal terms and disclaimers sets out your responsibilities, and your own employment lawyer should confirm what applies where you hire.
Get the sample reports
The three sample reports are HVAC seats: a service technician at 85, a dispatcher at 65 and a CSR at 21. A commercial cleaning report reads the same way, with the seat match, the interview questions and the 90-day watch list. Get the three sample reports.