High quality personnel. No one really likes to work in a dangerous place. An accident-free work environment can make you the employer of choice among workers who have choices of where they work. This will reduce voluntary turnover which also contributes to higher quality and productivity. Low cost per unit of production.
Many accidents also involve errors in production that cause that particular job to be scrapped.
Waste is expensive, and accidents produce waste. Waste also occurs in personnel costs with the constant hiring and training of replacement troops for those that are injured. Waste is compounded by the extra associated costs of treating the injuries and providing continuing benefits to injured workers. You can readily see that this is a kind of domino effect. Eliminating or at least reducing accidents sets in motion a chain of events that ultimately make you a better competitor in your industry.