In this Act, unless there is anything repugnant in the subject or context, -
(a) "workman" means any person who has entered into or works under a contract of, service or apprenticeship with an employer whether by way of manual labour, clerical work of or otherwise, and whether the contract is expressed or implied, oral or in writing; and
(b) "employer" includes any body of persons whether incorporated or not, any managing agent of an employer, and the legal representatives of a deceased employer, and, where the services of a workman are temporarily lent or let on hire to another person by the person with whom the workman has entered into a contract of service or apprenticeship, means such other person while the workman is working for him.