In this Act "employee" means an individual who has entered into or works under (or, where the employment has ceased, worked under) a contract of employment.
In this Act "contract of employment" means a contract of service or apprenticeship, whether express or implied, and (if it is express) whether oral or in writing.
In this Act "worker" (except in the phrases "shop worker" and "betting worker") means an individual who has entered into or works under (or, where the employment has ceased, worked under)—
and any reference to a worker's contract shall be construed accordingly.
In this Act "employer", in relation to an employee or a worker, means the person by whom the employee or worker is (or, where the employment has ceased, was) employed.
In this Act "employment"—
and "employed" shall be construed accordingly.
This section has effect subject to sections 43K , 47B(3) and 49B(10); and for the purposes of Part XIII so far as relating to Part IVA or section 47B, " worker ", " worker's contract " and, in relation to a worker, " employer ", " employment " and " employed " have the extended meaning given by section 43K.
This section has effect subject to section 75K(3) and (5).