Signage to Indicate the Presence of Engineered Nanomaterials in the Workplace: Lessons from a Trial Study That Led to Implementation in a Worksite

Production and use of engineered nanomaterials have grown substantially in recent years, leading to an increased potential for occupational exposure to these materials. Health and safety data remain largely unknown or incomplete for most engineered nanomaterials. The management of possible risks associated with engineered nanomaterials in the workplace is of paramount importance for workers, employers, and occupational health and safety (OHS) professionals and is a complex and developing field of research. A key component of risk management is the effective communication of known and potential risks in the workplace. Many proposals and recommendations have been made for signage to warn of the location and use of engineered nanomaterials within occupational settings. Such signage could raise awareness and serve as a reminder of the potential unknown health and safety risks presented by engineered nanomaterials. We have designed a simple visual pictogram intended to indicate the presence of engineered nanomaterials in the workplace. Herein, we present our pictogram in contrast with those concomitantly identified in various scientific guidelines and literature, provide details on a pilot-scale evaluation of this signage administered before a recent institution-level adaptation, and provide recommendations for those interested in implementing this signage in other workplaces. Strengthening risk communication by adapting this visual warning pictogram could help draw attention to potential risks, improve workplace hygiene, and ideally, decrease occupational exposure for those working with engineered nanomaterials.