Extra-help employees shall not be entitled to leaves of absence without pay as a matter of right, but only in accordance with the provisions of law and this Memorandum of Understanding. Unless otherwise provided, the granting of a leave of absence without pay also grants to the extra-help employee the right to return to a position in the same classification, or equivalent classification in the same department as they held at the time the leave was granted. The granting of any leave of absence without pay shall be based on the presumption that the extra-help employee intends to return to work upon the expiration of the leave.