■ trestles, be safely handled by one person? Can all the machinery and goods involved in the workplace be safely handled by ■ one person? Are there any chemicals or hazardous substances being used that may pose a ■ risk to the worker? Does the work involve lifting objects too large for one person? ■ Is more than one person needed to operate essential controls for the safe ■ running of equipment or workplace transport? Is there a risk of violence? ■ Are young, pregnant or disabled workers particularly at risk if they work alone? ■ Are there any other reasons why the individual (for example a trainee) may be ■ more vulnerable than others? If the lone worker’s first language is not English, are suitable arrangements in ■ place to ensure clear communication, especially in an emergency?