Which type of engineering control may be implemented by employers to reduce bloodborne pathogen hazards?

Installing barriers or other safety mechanisms serves as a critical engineering control to mitigate bloodborne pathogen hazards in the workplace. Engineering controls focus on isolating employees from the hazard through physical means. By installing barriers, such as safety glass or enclosures, employers can create a safer environment that reduces the likelihood of exposure to potentially infectious materials. These barriers can help contain any potential splashes or spills, providing a first line of defense against bloodborne pathogen transmission.

In contrast, other options may contribute to overall safety but do not specifically classify as engineering controls. For instance, while proper waste disposal methods and workforce training are essential components of safety programs, they fall under administrative or procedural controls rather than direct engineering strategies. Lockout/tagout procedures relate more to energy control and are not applicable to bloodborne pathogen risks. Therefore, installing barriers is the most effective and relevant engineering control among the provided options for addressing the hazards associated with bloodborne pathogens.