Field-Level Hazard Assessment A field-level hazard assessment is performed at the job site when hazards not considered in the formal hazard assessment could be introduced. All workers at the job site must participate in a field-level assessment with their supervisor. The field-level hazard assessment is conducted before work begins, and repeated at reasonable intervals if a new work process is introduced, a process, or operation changes, or before the construction of significant additions or alterations. The steps involved are as follows:
1. Before starting work on a new job site, or under unfamiliar conditions, worker(s) must stop to identify any hazards that may have been introduced into their usual work.
2. Any existing hazards are identified and assessed on the spot, and controls are put in place immediately to eliminate or reduce the risk to a reasonable level before work begins.
In many cases, a field-level hazard assessment will identify hazards that have already been identified and assessed through the formal hazard assessment process, since the formal process should have identified all hazards that workers would normally encounter in the course of their work. If this happens, the worker would be directed to a predetermined method of hazard control. If a new and unusual hazard specific to the job or job site is identified, a new control method may have to be identified and implemented before work can begin.