Versions of South Dakota Codified Laws 34-20G-28. Discipline for ingestion of cannabis at workplace and working under the influence of cannabis permitted on LawServer 2023 South Dakota Codified Laws 34-20G-28. Discipline for ingestion of cannabis at workplace and working under the influence of cannabis permitted 2022 South Dakota Codified Laws 34-20G-28. Discipline for ingestion of cannabis at workplace and working under the influence of cannabis permitted 2021 South Dakota Codified Laws 34-20G-28. Discipline for ingestion of cannabis at workplace and working under the influence of cannabis permitted