Cleaning robots now vacuum lobbies and scrub large floors overnight, and building software tracks which rooms were used and when supplies run low. Most of a janitor's day still happens in restrooms, stairwells, offices and corners no machine reaches well.
The short answer: current evidence does not point to AI replacing janitors. The ILO's 2025 index rates cleaners in offices, hotels and other establishments as not exposed to generative AI, at 0.12, among the lowest scores in the index. The US Bureau of Labor Statistics projects 2 percent growth for janitors and building cleaners from 2025 to 2035, with about 321,800 openings a year. Projections are estimates, not guarantees.
How exposed janitors are
The International Labour Organization scores occupations' tasks from 0 (cannot be automated with generative AI) to 1 (could be done without a human operator), and groups them into gradients from 1 to 4, with 4 the most exposed; below them sit minimal exposure and not exposed (ILO Working Paper 140, 2025).
| Occupation (ISCO-08) | ILO category | Mean task score (0 to 1) |
|---|---|---|
| Building Caretakers | Minimal exposure | 0.27 |
| Cleaners and Helpers in Offices, Hotels and Other Establishments | Not exposed | 0.12 |
The ILO index measures generative AI, not floor-cleaning robots, which are a separate kind of automation.
What the BLS projects
| Occupation | Projected change 2025 to 2035 | Openings a year |
|---|---|---|
| Janitors and building cleaners | Grow 2% | About 321,800 |
The BLS says most openings come from the need to replace workers who move to other occupations or leave the labor force.
What technology is taking on
- Vacuuming and scrubbing large, open floors with robots.
- Sensors that show which rooms were used and need cleaning.
- Supply tracking and reorder alerts.
- Scheduling, checklists and work orders on a phone.
What stays with the janitor
- Cleaning: restrooms, trash, windows, walls and the surfaces people touch most.
- Judgment: spills, damage and hazards nobody scheduled.
- The building: locking doors, small repairs and reporting what needs fixing.
- Checking: sensor schedules and AI checklists can be wrong, which NIST calls confabulation (NIST AI 600-1). See checking AI output.
How the job is changing
Cleaning teams increasingly run and look after cleaning machines alongside hand work, and follow digital work orders instead of paper lists. Workers who can handle the equipment and small maintenance jobs have more options.
See also will AI replace security guards?, will AI replace warehouse workers? and jobs safe from AI
Pay and how to get in
The US Bureau of Labor Statistics puts the median annual pay for janitors and building cleaners at $36,840 in May 2025, against $50,980 for all workers. The typical education needed to enter is: no formal educational credential. See how this job compares in AI exposure by pay and AI exposure by education level.
Questions and answers
Will AI replace janitors?
Not on current evidence. The ILO rates office and building cleaners not exposed to generative AI (0.12), and the BLS projects 2 percent US growth from 2025 to 2035.
Will cleaning robots replace janitors?
Robots handle some open floors, but restrooms, trash, surfaces and unexpected messes still need people.
How many janitor openings are expected?
The BLS projects about 321,800 openings a year for janitors and building cleaners.
What cleaning work stays human?
Restrooms, trash and detail cleaning, handling spills and hazards, securing the building and checking automated schedules.