There are far more than three federal employment laws; in fact, there are more than three categories of federal employment laws.
there are more than three
There are dozens of federal laws, and hundreds of state and local employment laws.
There is a different number of employment laws in every state, and in every country. And these numbers are constantly changing. There is no one answer to this. For a small example, the US Department of Labor (DOL) enforces more than 180 federal employment laws. But again, this is at the federal level, and states will likely have their own set of laws in addition to the federal ones.
The government provides an excellent website. Visit http://www.dol.gov/elaws/ to learn about employment laws.
Huh? The "group" that makes federal laws, is the U.S. Congress.
Laws relating to equal employment opportunity date back to the Civil Rights Act of 1883, which prohibited favoritism in federal employment.
There are three major federal antitrust laws: The Sherman Antitrust Act, the Clayton Act and the Federal Trade Commission Act.
Employment laws vary depending on what state you live in. There is a federal minimum wage, but many states choose to set it higher than the national level. Some states are "right to hire, right to fire" while others have very strong union laws. It is best to check with your state employment agencies to find out the specifics of the state you live in. Some laws like the federal minimum wage provision are standard across states. However, other laws do vary based on the state.
At the federal level- yes, there are no anti-discrimination laws based on previous criminal history. At the state level- depends on your state but most states' antri-discrimination laws mirror the federal laws.
making treaties,enforcing laws and making laws
Equal Employment Opportunity Act
All federal laws that prohibit employment discrimination on some basis (age, race, sex, etc.) also prohibit extreme harassment motivated by that same basis. Most US employees do not work for companies covered by federal discrimination laws. Harassment is hard for EEO agencies to prove.
Laws that apply to employment agencies offline also apply to those online. For example, Title VII of the Civil Rights Act is the principal federal statute with regard to employment discrimination prohibiting unlawful employment discrimination by public and private employers, labor organizations, training programs and employment agencies based on race or color, religion, sex, and national origin.