How can confidential data and information $($such as the wages of individual employees$)$ be kept confidential and yet still be available to managers who need them?

Many financial managers and corporate officers are often criticized for $($a$)$ poor decisions, $($b$)$ lack of ethical behavior, $($c$)$ large salaries, $($d$)$ lucrative severance packages worth millions of dollars, and $($e$)$ extravagant lifestyles. Is this criticism justified? Justify your opinion