The growing academic interest in Planetary Health as an approach to environmental and human health challenges has resulted in exploration of solutions that are often framed from within the PESTLE (political, economic, social, technological, legal, and environmental) approach popular in occupational theory or its variant STEEPLE: socio-demographic, technological, economic, environmental, political, legal, and ethical). The potential of a stronger ethical code as a solution to challenges has received less attention than other PESTLE/STEEPLE factors, however. To address this, authors of this paper drafted and published a draft code of ethics for Planetary Health.