Requires employers, including nonprofits, to provide paid sick leave to care for the employee's immediate family member who is suffering from a physical or mental illness, injury, or medical condition that requires care, professional medical diagnosis or care, preventive medical care, or a routine medical appointment; to care for the employee's own physical or mental illness, injury, or medical condition that requires care, professional medical diagnosis or care, preventive medical care, or a routine medical appointment; absence necessary due to circumstances resulting from the employee, or a family member of the employee, being a victim of stalking or domestic or sexual violence, for needs related to medical and psychological treatment, legal services and related issues; contains documentation requirements for employees seeking leave; provides for notice to employees and requires posting of notice in workplace; prohibits retaliation against employees taking leave under the Act; provides for enforcement.