Credit: (AP Photo/John Minchillo) File photo: A nurse at work during the early days of the pandemic. As the novel coronavirus began to spread last year, workers in health care, retail, warehouses and in other occupations raised concerns. Cecelia Gilligan Leto often fields calls from workers concerned for their safety while they do their jobs. As project director for the New Jersey Work Environment Council, Leto has trained people in workplace safety for years. So, when the novel coronavirus began to spread last year, workers in health care, retail, warehouses and in other occupations turned to her. “You had this invisible thing come into the workplace; people just didn’t know what to do with it, and there was a lot to learn in the beginning,’’ she said. “COVID was a new hazard, and in February and March those calls kept coming in and the people were fearful, and they were scared.”