Where the employer of a worker in retail employment receives from the worker a payment on account of a cash shortage or stock deficiency, the employer shall not be treated as receiving the payment in accordance with section 15 unless (in addition to the requirements of that section being satisfied with respect to the payment) he has previously—
A demand for payment made by the employer of a worker in retail employment in respect of a cash shortage or stock deficiency—
A demand for payment in respect of a particular cash shortage or stock deficiency, or (in the case of a series of such demands) the first such demand, shall not be made—
For the purposes of this Part a demand for payment shall be treated as made by the employer on one of a worker's pay days if it is given to the worker or posted to, or left at, his last known address—
Legal proceedings by the employer of a worker in retail employment for the recovery from the worker of an amount in respect of a cash shortage or stock deficiency shall not be instituted by the employer after the end of the period referred to in subsection (3)(b) unless the employer has within that period made a demand for payment in respect of that amount in accordance with this section.