The concept of Prevention through Design (PtD) is a cost-effective means to enhance occupational safety nd health. an approach for addressing occupational safety and health needs in the design process to prevent or minimize workrelated hazards and risks assures safety of a system, process, or operation an dthe prevention of failures (or accidents) through design all of the above The concept of Prevention through Design (PtD) is a cost-effective means to enhance occupational safety nd health. an approach for addressing occupational safety and health needs in the design process to prevent or minimize workrelated hazards and risks assures safety of a system, process, or operation an dthe prevention of failures (or accidents) through design all of the above