Union flooring jobs refer to positions with flooring companies that require employees to join a union. Union membership is usually limited to the installers; sales representatives, administrative staff, and management are typically not part of the union. As a union flooring installer, your job duties include removing old flooring, preparing the subfloor to ensure it is flat and ready for adhesives, and installing the new flooring. You may also repair or replace small patches of floor. With new construction projects, you create necessary supports or add subflooring when necessary. A union flooring professional can specialize in one type of flooring, such as wood floor or tile, or you can work with different kinds of materials and equipment.