… RESOURCES MANAGEMENT MANAGEMENT AND SUPERVISION Courses Degrees & Certificates Faculty Page Management is probably not something you frequently think about, nor do you often wonder why companies need managers or what they jobs entail. As a ship needs a captain to navigate waterways, an effective organization … own a business, or are employed by a private or public entity, for profit or non-profit, management skills are essential. So, what are managers and what are their different organizational roles? Managers' duties include planning, organizing, …