People can be exposed to warfarin in the workplace by breathing it in, swallowing it, skin absorption, and eye contact.
It is classified as an extremely hazardous substance in the United States as defined in Section 302 of the U.S. Emergency Planning and Community Right-to-Know Act (42 U.S.C. 11002), and is subject to strict reporting requirements by facilities which produce, store, or use it in significant quantities [REF].