Making it easy to report and hard to ignore
Reporting fails when it is inconvenient. If the route involves finding a form, remembering an email address or knowing which of three contacts is the right one, a tired cleaner at the end of a shift will decide the matter is not serious enough. So the route is one contact, one method, and it is written in the site instruction where they will see it. Everything else is designed around that single point.
It also has to be safe to use. A cleaner who has been told off for reporting something trivial will not report the next thing, and the next thing may not be trivial. The standing instruction is to report anything they are unsure about, and the response to an over-cautious report is a thank you rather than a correction. Under-reporting is much more expensive than the occasional unnecessary report.
