Employees have a right to understand what their risks are in the workplace and how to minimize the risk to their health . Physical and Health Hazards Understanding the difference between toxicity and hazard is important.
Toxicity is the inherent ability of a substance to cause adverse health effects.
Hazard refers to the likelihood that adverse health effects might occur. Exposure links toxicity and hazard. Without exposure, a toxic chemical cannot cause adverse health effects. Exposure can occur in three general ways, ingestion, skin contact and inhalation. Ingestion can occur by mouth pipetting, which is why this technique is banned.