| 1994 | Enacted the environmental technology and industry support act, creating the basis for an environmental labelling system |
| 1997 | Joined the global ecolabelling network |
| 1999 | Expanded scope of products eligible for environmental labelling |
| 2001 | Established environmental labelling criteria for electrical and electronic products |
| Introduced environmental performance labelling system |
| 2002 | Signed mutual recognition agreement with Taiwan Green Mark and Thailand Green Label |
| 2003 | Expanded products eligible for environmental labelling and revised certification criteria |
| Signed a mutual recognition agreement with Japan Eco Mark |
| 2004 | Changed the design of Korea eco-label |
| Signed mutual recognition agreement with Australia good environmental choice |
| 2005 | Strengthened eco-label certification criteria for 27 product groups |
| Enacted the act on promotion of purchase of eco-friendly products |
| Revised the eco-label target products and certification criteria |
| Signed mutual recognition agreement with China eco-labeling |
| 2006 | Signed mutual recognition agreement with New Zealand environmental choice |
| Revised the eco-label target products and certification criteria |
| Included new products/services and revised the classification system of the eco-label target products and certification criteria |
| 2009 | Introduced carbon performance labelling |
| 2010 | Signed mutual recognition agreement with Nordic Swan (Northern Europe) |
| 2011 | Expanded scope of services eligible for environmental labelling |
| 2012 | Signed mutual recognition agreements with Canada EcoLogo and US Green Seal |
| Opened KEITI Environmental Analysis Lab |
| 2013 | Signed mutual recognition agreements with German Blue Angel and Taiwan Green Building Material |
| Established environmental safety standards for hazardous substances contained in children's products |
| Introduced the eco-label certification auditor system |
| Made improvements in the Eco-label system |
| 2014 | Revised and implemented the enforcement decree of the act on the promotion of purchase of green products at public institutions |
| 2015 | Began receiving applications for and issuing Eco-label certification online |
| Implemented a working group composed of certified companies to establish and revise eco-label certification criteria |
| 2016 | Revised the eco-label target products and certification criteria |
| Established the third basic plan on promotion of purchase of green products |
| 2017 | Changed the logo of Korea eco-label |
| 2021 | Issued pre-announcement of administration for the revised eco-label target products and certification criteria |
| 2022 | Expanded items eligible for premium certification and newly implemented everyday consumer product category |