Age discrimination refers to the denial of privileges and other unfair treatment of employees or job applicants based on their age. This is prohibited by federal law under the Age Discrimination in Employment Act (ADEA) of 1967.
A grievance is an allegation that something imposes an illegal burden, denies some equitable or legal right, or causes injustice. It often refers to formal complaints within an organizational context, particularly in workplaces subject to collective bargaining agreements.
