At the macro-level, HR is in charge of overseeing organizational leadership and culture. HR also ensures compliance with employment and labor laws, which differ by geography, and often oversees health, safety, and security. Based on the geographic location, various laws may apply. In federal jurisdictions, there may be several federal laws that are crucial for HR managers to be familiar with in order to protect both their company and its employees. In the United States of America, important federal laws and regulations include the Fair Labor Standards Act of 1938, which includes establishing a minimum wage and protecting the right for certain workers to earn overtime. The 1964 Federal Civil Rights Law protects against discrimination and prohibits making any hiring or firing decision based on race, age, sex, and gender. The Family and Medical Leave Act gives eligible employees up to twelve weeks of unpaid leave for family and medical reasons. Ensuring the company is compliant with all laws and regulations is an important aspect of HR and will protect the company from any sort of 'legal liability'. In circumstances where employees desire and are legally authorized to hold a collective bargaining agreement, HR will typically also serve as the company's primary liaison with the employee's representatives (usually a labor union). Consequently, HR, usually through representatives, engages in lobbying efforts with governmental agencies (e.g., in the United States, the United States Department of Labor and the National Labor Relations Board) to further its priorities.