Iowa Admin. Code r. 11-57.7
The director may authorize appointing authorities to make seasonal appointments to positions. Seasonal appointments may be made to any class and at any rate of pay within the range for the class to which appointed. Seasonal appointments may, however, be made only during the seasonal period approved by the director for the agency requesting to make the appointment and must be concluded by the end of that period. To be eligible to make seasonal appointments, the appointing authority must first submit a proposed seasonal period to the director for approval. Such period shall not exceed six months in a fiscal year; however, the appointment may start as early as the beginning of the pay period that includes the first day of the seasonal period and may end as late as the last day of the pay period that includes the last day of the seasonal period.
Persons appointed with seasonal status shall have no rights to appeal, transfer, promotion, demotion, reinstatement, or other rights of position, nor be entitled to vacation, sick leave, or other benefits, unless the temporary employee becomes covered by a collective bargaining agreement, in which case the temporary employee may have rights under the collective bargaining agreement.
A person appointed with seasonal status shall only be given another temporary or seasonal appointment to the extent that the total number of hours worked in all temporary and seasonal appointments in any agency in a fiscal year does not exceed 780 hours.
Iowa Admin. Code r. 11-57.7