The Factories Act of 1948 is the main law regulating occupational safety, health and welfare of workers in factories across India. Some key points: - It defines a factory as a premises with 10 or more workers using power or 20+ workers without power. Various industries like salt works and saw mills are considered factories. - It requires factories to register and comply with regulations around cleanliness, ventilation, lighting, drinking water, welfare amenities, working hours and overtime pay. - It mandates safety measures for machinery, prohibition of young/women workers from dangerous machines, and accident reporting. - It provides for annual leave, and welfare provisions like canteens, restrooms, and creches depending on