(1) An employee is entitled to use paid sick leave for the authorized purposes outlined in RCW 49.46.210 (1)(b) and (c).

(2) An employee is entitled to use accrued, unused paid sick leave beginning on the ninetieth calendar day after the commencement of his or her employment. Employers may allow employees to use accrued, unused paid sick leave prior to the ninetieth calendar day after the commencement of his or her employment.

(3) Beginning on the ninetieth calendar day after the commencement of his or her employment, employers must make accrued paid sick leave available to employees for use in a manner consistent with the employer's established payment interval or leave records management system, not to exceed one month after the date of accrual.

(4) Unless a greater increment is approved by a variance as provided by WAC 296-128-640, employers must allow employees to use paid sick leave in increments consistent with the employer's payroll system and practices, not to exceed one hour. For example, if an employer's normal practice is to track increments of work for the purposes of compensation in fifteen-minute increments, then an employer must allow employees to use paid sick leave in fifteen-minute increments.