Creates the Right to Sit at Work Act. Provides that an employer shall provide a suitable seat to an employee when the nature of the employee's work reasonably allows for seated work. Provides that on and after the effective date of the Act, an employer shall not design a work space to require standing if the work space could reasonably be designed to allow seated work. Provides for notice requirements. Provides for private rights of action and enforcement by the Department of Labor. Sets forth civil penalties for violations of the Act.