Impact of Plant-Based Menu Transition on Employee Nutrition at GreenTech Corp

Thesis Abstract

The transition to plant-based menus within corporate cafeterias at GreenTech Corp presents a pivotal case to examine how dietary shifts influence employee nutrition, job satisfaction, and health outcomes in a high-technology organizational setting. This study addresses the problem of whether a systematic plant-based menu transition can maintain or improve employees’ nutrient adequacy, energy balance, and health indicators while supporting sustainability goals. The aim is to evaluate the nutritional implications, acceptability, and potential health and productivity effects of the phased menu transition, guided by the theories of organizational change and nutritional ecology. Specific objectives are to (1) assess baseline dietary intake and nutrient adequacy among employees prior to the transition; (2) quantify changes in macro- and micronutrient intake, body mass index (BMI), and selected cardiometabolic markers over a 12-month transition period; (3) examine employee acceptance, taste preferences, and perceived barriers to plant-based options; (4) analyze relationships between menu type, dietary adherence, and work-related outcomes such as perceived energy, concentration, and sick leave; and (5) identify operational and policy factors that influence the success of corporate plant-based meals. A mixed-methods design will be employed, integrating a quasi-experimental longitudinal cohort and nested qualitative assessments. The population comprises 1,000 employees across GreenTech Corp’s US-based headquarters. A purposive sample of 600 employees from cafeterias implementing the plant-based transition will be recruited, with 300 serving as an internal control group continuing conventional menus. Dietary intake will be assessed at baseline, 6 months, and 12 months using 24-hour dietary recalls (three non-consecutive days per time point) and a validated food frequency questionnaire tailored to plant-based eating patterns. Biochemical and anthropometric data will include fasting lipid profile, blood glucose, HbA1c, BMI, and waist circumference collected at the same intervals by onsite occupational health services. Food environment data will be captured via cafeteria menu audits, purchase data, and tray-level observational records. Additionally, a subset of 40 employees will participate in semi-structured interviews to explore motivations, satisfaction with plant-based options, and perceived barriers. Validity and reliability will be ensured through standardized protocols, trained researchers, and double data entry with regular data quality checks. Ethical approval will be obtained, and informed consent will be secured from all participants. Quantitative data will be analyzed using repeated-measures ANOVA and linear mixed-effects models to examine trajectories of nutrient intake, biomarkers, and anthropometric measures, adjusted for confounders such as age, sex, baseline physical activity, and job role. Regression analyses will test associations between adherence to plant-based meals and health/work outcomes. Mediation analysis will explore whether changes in dietary intake mediate the relationship between menu type and perceived energy or productivity. Qualitative data will be analyzed using reflexive thematic analysis to identify themes related to acceptability, cultural fit, taste, convenience, and organizational support. An integrated interpretation will triangulate quantitative and qualitative findings to provide a comprehensive understanding of the impact of the transition. Theoretical framing will draw on the Theory of Planned Behavior to interpret dietary adherence and the Social Ecological Model to contextualize influences at individual, interpersonal, organizational, and environmental levels; nutritional epidemiology will underpin the interpretation of intake and biomarker data. Expected findings include improved intake of fiber, polyunsaturated fats, phytonutrients, and micronutrients from plant-based options, with potential reductions in saturated fat intake and refined carbohydrate consumption. Biomarkers may show favorable trends in lipid profiles and glycemic markers in adherent employees, while BMI effects may be modest due to baseline weight status and energy compensation. Employee acceptance is anticipated to vary by taste satisfaction, perceived convenience, and health-related motivations, with organizational factors such as pricing, labeling, and meal variety moderating outcomes. The study will contribute to knowledge by providing empirical evidence on the nutritional and health implications of corporate plant-based menus, informing guidelines for workplace nutrition policy, and identifying critical implementation factors for sustainable dietary transitions. The main conclusion is that well-designed plant-based menus, aligned with nutritional adequacy and employee preferences, can maintain or improve health outcomes without compromising productivity, provided that ongoing engagement, skillful menu engineering, and supportive organizational infrastructure are in place. Recommendations include refining menu labeling, ensuring protein adequacy through diverse plant sources, offering hybrid meal options to accommodate varied preferences, and implementing continuous monitoring of dietary intake and health indicators to sustain benefits. Further research should explore long-term health outcomes and scalability across different corporate contexts.