Given this condition, dehydration happens when you lose more body fluids than you take in, essentially placing your body in a fluid deficit. We will start with the assumption that we are all healthy and have no underlying health issues increasing our hydration needs. Here we will explore what proper hydration is and how to prevent dehydration on the worksite. Dehydration in any setting negatively affects performance and can lead to injury. Just like athletes in sports, people working in the trades have a higher hydration requirement compared to someone working in the office setting. Construction workers are the athletes of the work world.