Are there any Ergonomics standards?

Yes! Several organizations at the national and international level write ergonomics-related standards and guidelines. Occupational Safety and Health Administration (OSHA), National Institute for Occupational Safety and Health (NIOSH), American National Standards Institute (ANSI), and the International Organization for Standardization (ISO) are the main groups who create the standards/guidelines in the U.S.
Guidelines have also come from trade organizations or standardized industry practices.
At the U.S. federal level, the Occupational Safety and Health Administration (OSHA) has several times attempted to promulgate an "Ergonomics Program Rule," but has failed to reach a stage at which regulation is formerly pending. On November 14th, 2000, OSHA published an ergonomics program standard in the Federal Register under the Clinton administration. On January 16, 2001 the program took effect. The Bush Administration repealed it 63 days later on March 20, 2001. (There are also many standards in places outside of the United States. )
• ANSI B11 Technical Report: Ergonomic guidelines for the Design, Installation, and Use of Machine Tools.
• ANSI Z-365: Control of Work-Related Cumulative Trauma
• ISO 9241
• State of California Ergonomics Rule
• State of Washington Ergonomics Rule