In this Act:
"employer" includes—
(a) an entity; and
(b) the legal personal representative of a dead employer; and
(c) if the services of the worker are temporarily lent or let on hire to someone else (the temporary employer ) by the person (the original employer ) with whom the worker has entered into a contract of service or apprenticeship—the original employer is, for this Act, taken to continue to be the employer of the worker while the worker is working for the temporary employer.