23. An officer holds an interim position when he agrees to hold a position temporarily for his employer in an operational hierarchical line where it is necessary for the position to be held continuously. The salary class for such a position shall be higher than that for his regular position. The officer cannot simultaneously hold his own position during that period. For the interim period, the officer shall receive a lump sum payment representing the difference between his salary and the higher of the following 2 amounts:— 110% of the his salary, not exceeding the maximum for the salary class of the interim position;
— the minimum for the salary class of the interim position.
An officer may hold an interim position for a period ranging from 2 to 18 months subject to an extension authorized by the Minister. However, where he is replacing a senior administrator or officer on disability leave or parental leave, the replacement may be for the duration of the period of absence.