Why should sheila start wearing ppe when she didn't wear any for 15 years?

Sheila should start wearing personal protective equipment (PPE) to ensure her safety and health, as prolonged exposure to hazards can lead to cumulative risks over time. Even if she hasn’t experienced issues in the past, conditions and regulations may have changed, and new risks could be present. Wearing PPE can help prevent injuries and illnesses, ultimately protecting her long-term well-being. It's better to adopt safety measures now than to face potentially serious consequences later.