Final answer:
OSHA's 'focus four' training topics include caught-in or -between, struck by, electrocution, and fall hazards. These are critical safety areas aimed to reduce workplace fatalities and serious injuries.
Step-by-step explanation:
OSHA's "focus four" training topics include caught-in or - between, struck by, electrocution, and fall hazards. These topics are emphasized for training because they are the most common causes of fatalities on construction sites. OSHA standards aim to protect workers by requiring fall protection, preventing trenching cave-ins, ensuring safe confined space entry, limiting exposure to harmful chemicals, providing safety equipment, and enforcing machine guarding. Furthermore, the General Duty Clause from the OSH Act obligates employers to maintain a workplace free from serious recognized hazards, covering perils that may not be explicitly addressed in the standards.