The following is a list of web links for agencies and services that provide information and assistance to those who work on existing buildings and renovations, and for general occupational health and safety in Canada:
OSH Answers - Searchable, "Easy-to-read, question-and-answer fact sheets covering a wide range of workplace health and safety topics, from hazards to diseases to ergonomics to workplace promotion"
Health Canada - Government of Canada body responsible for designation and classification of materials, substances, environments or foods that may affect human health.