Timely delivery of materials One reason why electrical hazards are mentioned though out the tool box talks is because of the exposure all workers have to electrical hazards, the silent killer. What the law says. Reason: Site security is essential for the protection of people and materials. Why: Unauthorised persons will probably not be aware of the Toolbox Talks. Security on Site. Reference: WAC (3)(a) Training Requirements. One of the many challenges that construction companies face is theft o