Concerns the physical and mental health of workers and includes the

study of work methods, conditions of work and factors in the working environment that may cause diseases or injuries.

Concerns the protection of worker’s lives and physical well-being by eliminating or controlling risks in the working environment or the system of work within which workers operate.

The _____ of a chemical substance is a level to which it is believed a worker can be exposed day after day for a working lifetime without adverse health effects.

____ is also known as comfort design, functional design, and user-friendly systems, is the practice of designing products, systems or processes to take proper account of the interaction between them and the people who use them.

______ are substances used and/or produced at work that have the potential to harm the health and safety of people at work.

______ refer to biological substances that pose a threat to the health of living organisms, primarily that of humans.

_____ is clothing equipment designed to be worn by a nail technician or salon workers to protect them from risks of injury or illness.