"Employees covered by the [Public Health Emergency Leave Ordinance (PHELO)] include full-time, part-time, temporary, seasonal, salaried and commissioned workers, and individuals employed through public job training programs, such as CalWorks or CAAP, who have performed at least 56 hours of work within the San Francisco City and County geographic boundaries during the prior year. Emergency leave will be available for immediate use, regardless of how long the employee has been employed by the employer and regardless whether or when the employee is scheduled to work."