The Occupation Health and Safety Act defines Employer as: Person who employs one or more workers or contracts for the services of one or more workers, and includes a contractor or subcontractor who performs work or supplies services. Also a contractor or subcontractor who undertakes with an owner, constructor, contractor or subcontractor to perform work or supply services. The WSIA defines Employer as: Person having in his, her or its service under a contract of service or apprenticeship, another person engaged in work in or about an industry and includes, (a) a trustee, receiver, liquidator, executor or administrator who carries on an industry; (b) a person who authorizes or permits a learner to be in or about an industry for the purpose of undergoing training or probationary work, or (c) a deemed employer. The workplace party controlling the activities of the workplace and the worker