Amends the One Day Rest In Seven Act. Provides that the calculation of required rest days does not include any time that the employee is on call. Provides that an employee who voluntarily agrees to work on a day of rest must be paid at his or her regular hourly rate or, if applicable, at the overtime wage rate as required by the Illinois Minimum Wage Law. Provides that every employer shall permit its employees who are scheduled or expected to work (rather than are to work) for 7 1/2 continuous hours at least 20 minutes for a meal period beginning no later than 5 hours after the start of the work period. Provides that any employer, or agent or officer of an employer, has violated the Act if he or she discharges, takes an adverse action against, or in any other manner discriminates against any employee because that employee has exercised a right under the Act. Provides that the Director of Labor may (rather than shall) grant long term and short permits authorizing the employment of persons on days of rest. Makes changes in provisions concerning definitions; posting requirements; recordkeeping; and civil offenses. Makes other changes.