This book uncovers computer users perceptions, attitudes towards the use of email and experiences with musculoskeletal disorders developed by computer keyboarding, and what emotions or feelings associated with use of email, and any relationship between the emotions associated with the email use and the perceived musculoskeletal stress. In this book you will find evidences pertinent to musculoskeletal disorders, personal perceptions on assigning emotional reactions in working with computer software for performing email tasks, impact of email on interpersonal relationships and communicational patterns, and their attitudes towards and experiences with ergonomic quality of the workplace and musculoskeletal discomfort and illnesses. This book also presents mathematical models to reveal the risk factors of work-related musculoskeletal disorders due to computer and email use.