An important and mandatory component of health and safety at McMaster is a documented job hazard analysis (JHA) of main activities associated with each employee. A job hazard analysis is essential in clarifying the work to be done in conjunction with the hazards and controls that are associated with the activity. While reviewing a list of the main activities involved with each job, common hazards are identified. If a hazard cannot be eliminated it needs to be minimized before the job is performed. Hazards can be minimized by implementing controls such as personal protective equipment, written procedures or training.