A Fire Watch job involves continuously monitoring work areas, especially those with "hot work" (welding, cutting, etc.), to prevent fires and respond to any emergencies. Key responsibilities include spotting potential fire hazards, patrolling the work area, ensuring safety equipment is present and functional, and sounding alarms to alert workers and emergency services if a fire starts. Fire watchers must also be trained to use fire extinguishers and have the authority to stop work if safety conditions are compromised.