Maintenance work often involves using access equipment to reach roofs, gutters, building services, and raised sections of plant and machinery. It can be all too easy to fall from these positions, or to drop things onto people beneath.
The WAIT toolkit provides advice and guidance on the suitability of the most common types of access equipment available. This will be particularly helpful if you aren't an expert in these matters and only use access equipment occasionally.
For more general advice on falls from height see the HSE Falls webpages.