Relevant WorkSafeBC OH&S Regulations & Guidelines:

G11.2-6 Fall Protection During Stunt Work
Part 11 – Fall Protection Regulations & Guidelines
Part 13 – Ladders, Scaffolds and Temporary Work Platforms Regulations & Guidelines
Part 14 – Cranes and Hoists Regulations & Guidelines
Part 15 – Rigging Regulations & Guidelines
Part 16 – Mobile Equipment Regulations & Guidelines
Part 32 – Evacuation & Rescue Regulations & Guidelines Part 34 – Rope Access Regulations & Guidelines

Other helpful information:

ACTSAFE Bulletin #14 – Performer Flying & Aerial Stunts
WorkSafeBC- An Introduction to Personal Fall Protection Equipment 
Ontario – Mandatory Training for working at Heights
Stunt Harness Hazard Alert