Based on the lifelong experiences of two authors as supervisors and teachers, the fourth edition of this bestseller provides up to date information for newly promoted or management aspiring professionals and engineers in the fields of environmental health, occupational health and safety, water and wastewater treatment, public health, and many others besides. This edition contains eighteen tools divided between two volumes that provide supervisors with the necessary skills to lead and manage effectively. The first volume explains basic and essential principles of leadership, how to make programs work, and best practices for achieving success in a management position. The second volume demonstrates more advanced skills and concepts, including mastering communication, resolving problems, and managing employee health and safety. In addition to those already professionals in their fields, this book is an excellent resource for students interested in learning management skills prior to entering the workforce. Features of the Fourth Edition: Helps understanding and utilizing organizational structure to facilitate problem-solving Offers a practical set of methods, tools, and techniques, all illustrated and easy to understand, for achieving leadership qualities Provides concise but essential discussion material for each topic using the practical art of communications Includes thorough updates and many new case problems with answers provided Introduces self – testing questions for different situations and practical exercises utilizing the individual’s own work experience for answers