Occupational exposure limit values (OELs)

The first TRGS 900 (Technical Rules for Hazardous Substances, in German) with occupational exposure limit values (OELs) for the new Hazardous Substances Ordinance (GefStoffV) of December 2004 was published in January 2006. It is usually updated twice a year.

The latest updates as of June 2026 (PDF, 114 kB, accessible) are available for downloading (in German).

Former updates:

• Update December 2025 (PDF, 110 kB, accessible)
• Update March/May 2025 (PDF, 102 kB, accessible)
• Update June 2024 (PDF, 123 kB, accessible)
• Update January 2024 (PDF, 100 kB, accessible)
• Update June 2023 (PDF, 113 kB, non-accessible)
• Update April 2023 (PDF, 37 kB, non-accessible)
• Update June 2022 (PDF, 129 kB, non-accessible)
• Update February 2022 (PDF, 92 kB, non-accessible)
• Update July 2021 (PDF, 137 kB, non-accessible)
• Update March 2021 (PDF, 131 kB, non-accessible)
• Update October 2020 (PDF, 134 kB, non-accessible)
• Update March 2020 (PDF, 50 kB, non-accessible)
• Update March 2019 (PDF, 73 kB, non-accessible)
• Update June 2018 (PDF, 180 kB, non-accessible)
• Update May 2018 (PDF, 159 kB, non-accessible)
• Update January 2018 (PDF, 212 kB, non-accessible)
• Update November 2017 (PDF, 213 kB, non-accessible)
• Update October 2017 (PDF, 47 kB, non-accessible)
• Update June 2017 (PDF, 159 kB, non-accessible)
• Update of November 2016 (PDF, 132 kB, non-accessible)
• Update of June 2016 (PDF, 45 kB, non-accessible)
• Update of November 2015 (PDF, 152 kB, non-accessible)
• Update of March 2015 (PDF, 48 kB, non-accessible)
• Update of October 2014 (PDF, 48 kB, non-accessible)
• Update April 2014 (PDF, 52 kB, non-accessible)
• Update September 2013 (PDF, 51 kB, non-accessible)
• Update April 2013 (PDF, 31 kB, non-accessible)
• Update September 2012 (PDF, 38 kB, non-accessible)
• Update January 2012 (PDF, 32 kB, non-accessible)
• Update December 2011 (PDF, 33 kB, non-accessible)
• Update April 2011 (PDF, 24 kB, non-accessible)
• Update June 2010 (PDF, 29 kB, non-accessible)
• Update February 2010 (PDF, 52 kB, non-accessible)
• Update July 2009 (PDF, 23 kB, non-accessible)

The Gefahrstoffliste (List of hazardous substances, in German only) summarises the main regulations governing occupational safety and health, together with complementary remarks, in the form of a table.

The Grenzwerteliste (List of Limit Values, in German only) issued by the Institute for Occupational Safety and Health of the German Social Accident Insurance (IFA) contains the most important limit values for chemical, biological and physical agents which have an impact on health and safety in the workplace.