Before employers ask workers to wear motion monitors as part of safety programs, they must assure employees the findings won’t be used in performance reviews, a new report advises.

“Generally, the number one concern is privacy,” report co-author Lora Cavuoto, an associate professor at the University of Buffalo in New York’s Department of Systems and Industrial Engineering, told Bloomberg Law.

The American Society of Safety Professionals report surveyed 952 safety professionals. It identified the need to seek cooperation on a...