§ 9-4603.  Compensation for Changed Work Schedules.
   (1)   For each employer-initiated change to the Posted Work Schedule that occurs after the advance notice required in subsection 9-4602(3), a Covered Employer shall pay an employee Predictability Pay at the following rates, in addition to the employee's regular pay for hours actually worked by the employee:
      (a)   One hour of Predictability Pay at the employee's regular rate of pay, when the Covered Employer adds time to a work shift or changes the date or time or location of a work shift, with no loss of hours.
      (b)   Predictability Pay calculated as no less than one-half times the employee's regular rate of pay per hour, for any scheduled hours the employee does not work for the following reasons:
         (.1)   Hours are subtracted from a regular or on-call shift; or
         (.2)   A regular or on-call shift is cancelled.
   (2)   A Covered Employer is not required to pay Predictability Pay under this Section 9-4603 or obtain written consent pursuant to subsection 9-4602(6), whenever:
      (a)   An employee requests a shift change by written communication, including but not limited to voluntary additions or subtractions of hours that are initiated by the employee, the use of sick leave, vacation leave, or other leave policies offered by the employer;
      (b)   A schedule change is the result of a mutually agreed-upon shift trade or coverage arrangement between employees, subject to any employer policy regarding required conditions for employees to exchange shifts;
      (c)   The Covered Employer's operations cannot begin or continue due to:
         (.1)   Threats to the employees or the employer's property;
         (.2)   The failure of a public utility or the shutdown of public transportation;
         (.3)   A fire, flood or other natural disaster;
         (.4)   A state of emergency declared by the President of the United States, Governor of the state of Pennsylvania, or Mayor of the city; or
         (.5)   Severe weather conditions that disrupt transportation or pose a threat to employee safety.
      (d)   An employee begins or ends work no more than twenty minutes before or after the scheduled start or end time of the shift;
      (e)   An employee volunteers to work additional hours in response to a mass written communication from the employer about the availability of additional hours, provided that the mass communication is only used for additional hours that are the result of another employee being unable to work scheduled hours, and the communication makes clear that accepting such hours is voluntary and the employee has the right to decline such hours;
      (f)   Employee hours are subtracted due to termination of employment;
      (g)   Changes are made to the Posted Work Schedule within 24 hours after the advance notice required in subsection 9-4602(3);
      (h)   The covered employer subtracts hours from an employee's work schedule for disciplinary reasons pursuant to a multi-day suspension, provided the employer documents in writing the incident leading to the disciplinary action;
      (i)   A ticketed event is cancelled, scheduled, rescheduled, postponed, delayed, increases in expected attendance by twenty percent (20%) or more, or increases in duration, due to circumstances that are outside the employer's control and that occur after the employer provides the Posted Work Schedule with the advance notice required by subsection 9-4602(4). Additional hours due to a change in a ticketed event's duration that fall within this exemption will also be fully exempt from subsection 9-4602(6).
      (j)   A hotel banquet event is scheduled, due to circumstances that are outside the employer's control, after the employer provides the Posted Work Schedule with the advance notice required by subsection 9-4602(4).