Section 18 of Employment Act CAP 226: When wages or salaries due

(1) Where a contract of service entered into under which a task or piece-work is to be performed by an employee, the employee shall be entitled—
(a) when the task has not been completed, at the option of his employer, to be paid by his employer at the end of the day in proportion to the amount of the task which has been performed, or to complete the task on the following day, in which case he shall be entitled to be paid on completion of the task; or
(b) in the case of piece-work, to be paid by his employer at the end of each month in proportion to the amount of work which he has performed during the month, or on completion of the work, whichever date is the earlier.
(2) Subject to subsection (1), wages or salaries shall be deemed to be due— (a) in the case of a casual employee, at the end of the day;
(b) in the case of an employee employed for a period of more than a day but not exceeding one month, at the end of that period;
(c) in the case of an employee employed for a period exceeding one month, at the end of each month or part thereof;
(d) in the case of an employee employed for an indefinite period or on a journey, at the expiration of each month or of such period, whichever date is the earlier, and on the completion of the journey, respectively.
(3) The provisions of this section shall not affect an order, judgment or award of the Industrial Court or an agreement between an employee and his employer the relevant terms of which are more favorable to the employee than the provisions of this section.
(4) Where an employee is summarily dismissed for lawful cause, the employee shall, on dismissal be paid all moneys, allowances and benefits due to him up to the date of his dismissal.
(5) Upon the termination of a contract of service—
(a) by effluxion of time, it shall be the duty of the employer to ensure that the employee is paid the entire amount of the wages earned by or payable to the employee and of the allowances due to him as have not been paid;
(b) by dismissal, the employer shall, within seven days, deliver to a labour officer in the district in which the employee was working a written report specifying the circumstances leading to, and the reasons for, the dismissal and stating the period of notice and the amount of wages in lieu thereof to which the employee would, but for the dismissal, have been entitled; and the report shall specify the amount of any wages and other allowance earned by him since the date of the employee’s dismissal.
(6) No wages shall be payable to an employee in respect of a period during which the employee is detained in custody or is serving a sentence of imprisonment imposed under any law.