What is health and safety act and when was it introduced?

What is the The Health And Safety Regulations Act and when was it passed?

What is stress?
What are:
-The causes
-The symptoms
-The solutions?

What is eye strain?
What are:
-The causes
-The symptoms
-The solutions?

What is back and neck injuries and what are the cause, symptoms and solutions for it?

What is repetitive strain injury (RSI) and what are the cause, symptoms and solutions for it.

What is ergonomics?