what are engineering controls

Engineering controls are physical changes to a workplace or process that reduce or remove a hazard at the source, instead of relying only on worker behavior or personal protective equipment.

Quick scoop

Common examples include ventilation systems, machine guards, enclosures, and safer equipment design.

They are considered one of the most effective ways to control hazards because they protect people before exposure happens.

In plain language

If a hazard is the problem, engineering controls try to “build the danger out” of the task.
For example, a fume hood pulls harmful vapors away from a worker, and a guard on a machine keeps hands away from moving parts.

Why they matter

• They reduce exposure at the source.

• They usually work passively, with little action needed from the worker.

• They are generally preferred over administrative controls and PPE when feasible.

Common examples

• Local exhaust ventilation.
• Machine guards.
• Barriers and enclosures.
• Noise reduction design.
• Ergonomic workstation changes.

If you want, I can also give you a simple OSHA-style explanation or compare engineering controls with administrative controls and PPE.