Depending on the location of your company or your status, you may be exempt from taxes.  The following recommended websites will provide you with current information.
Employers are also responsible for the payroll deductions, where applicable, such as Canada Pension Plan, Employment Insurance and Income Tax.
www.ccra-adrc.gc.ca/tax/business
www.firstbusiness.ca/taxes/index.htm www.ccra.gc.ca

Workers Compensation Board
Compensates employees for work related injuries, and tries to ensure that all work environments meet safety and health standards.
www.worksafebc.com