Which of the following posters is NOT required to be posted by employers under federal law?

The requirement for employers to post various notices is dictated by federal laws designed to inform employees about their rights and protections in the workplace. Among the listed options, posters related to Age Discrimination, Family and Medical Leave, and Safety Requirements are mandated by federal regulations.

The Age Discrimination in Employment Act (ADEA) requires employers to display a notice informing workers of their rights not to be discriminated against based on age. Similarly, the Family and Medical Leave Act (FMLA) obligates employers to provide information about their employees' rights regarding unpaid leave for family and medical reasons. Additionally, occupational safety regulations necessitate the posting of information regarding workplace safety to ensure employees are informed about their rights and safety protocols.

In contrast, the topic of Workplace Ethics does not have a specific federal law that mandates a poster to be displayed. While ethical practices are crucial in maintaining a positive work environment and may be part of company policy, there is no federal requirement for employers to post such information as a notice. Therefore, Workplace Ethics is the correct answer as it is not required under federal law to be posted by employers.