This can be done under a collective agreement, a memorandum of understanding or another agreement between the public body and the workers` representatives. If the workers do not have a representative, the compensation time may be used instead of overtime pay in cash only if such an agreement or agreement was concluded between the public body and the worker before the work was performed. For workers who were hired before April 15, 1986 and who do not have a representative, no agreement or arrangement is required if the employer had a regular practice on April 15, 1986, of granting a compensatory period instead of overtime pay. .