Nurses in the workplace can positively affect employee health and wellness, which ultimately affects productivity and profit. 2. Evaluative research about health promotion services provides useful data about programs and cost effectiveness. 3. Knowing the issues and variables affecting the provision of health promotion services and the evaluation of program outcomes helps nurses plan appropriate services and programs as well as valid and reliable research projects. 4. Major issues include: system entry, management support and commitment, environmental context, ethical considerations, program variables, research design, instruments and equipment, program sites and times, type of program/services, and recordkeeping.