A seasonal worker is an employee who performs labor or services on a seasonal basis…. A seasonal employee is … ‘an employee who is hired into a position for which the customary annual employment is six months or less.’ … The seasonal employee is unique compared to part-time, variable-hour, and full-time employees … because it does not factor in an employee’s hours of service…. Seasonal workers are only relevant for determining if an employer is an Applicable Large Employer (ALE). Seasonal employees are only relevant when determining if a new employee can be placed into an initial measurement period. Source: Health Care Attorneys P.C.