This book contains 12 case histories, each based on a real-life problem, that show how a manager can use common sense, knowledge, and interpersonal skills to solve problems in human performance at work. Each case study describes a worker's problem and provides background information and an assignment; solutions are suggested. The following cases are included: the Handicapped Meat Processor; the Damaged Dry Goods; the Scrubber's Scourge; the Annealer's Anathema; the Railroaders' Roster; the Frustrated Freighter; the Litigious Lab Tech; the Surly Supervisor; the Seated Sorter; the Small Tool Telephone Trauma; the Haitian Handsaw; and the Sullen Secretaries. Four appendixes provide information on the following: anthropometry; anthropometric estimates for U.S. adults; National Institute of Occupational Safety and Health lifting guidelines; and Snook and Ciriello lifting guidelines. A selected bibliography lists seven books and four journals. (KC)