Indiana Code Title 22. Labor and Safety § 22-4-7-3

Sec. 3. (a) As used in this article, “seasonal employer” means an employer that, because of climatic conditions or the seasonal nature of a product or service, customarily operates all or a portion of its business only during a regularly recurring period or periods of less than twenty-six (26) weeks for all seasonal periods during a calendar year.  An employer may be a seasonal employer with respect to a portion of its business only if that portion, under the usual and customary practice in the industry, is identifiable as a functionally distinct operation.

(b) As used in this article, “seasonal determination” means a decision made by the department after application in the form and manner prescribed by the department as to the seasonal nature of the employer, the normal seasonal period or periods of the employer, and the seasonal operation of the employer covered by such determination.