Gendered language use in professional contexts continues to shape how authority, expertise, collaboration, and inclusion are enacted in everyday organizational life. Workplace communication operates within structured institutional environments where linguistic choices are constrained by genre conventions, hierarchical positioning, and expectations of professionalism. This study presents a corpus-based investigation of gender-indexed variation in English workplace discourse across multiple communicative genres, including emails, meeting transcripts, and internal reports. The research examines whether systematic differences emerge in lexical selection, grammatical patterning, and pragmatic strategies, and how these differences interact with organizational roles and power relations. Drawing on principles from register analysis, functional communication theory, and computational corpus linguistics, the study adopts a quantitative design that integrates frequency analysis, keyness statistics, collocation patterns, and multivariate modeling. Gender is treated not as a fixed linguistic determinant but as a socially mediated variable shaped by institutional norms and discursive expectations. Particular attention is given to how hierarchical status may amplify, neutralize, or reconfigure gender-associated tendencies in language use. The methodology is presented as a single integrated framework detailing corpus construction, annotation procedures, statistical modeling, and analytical validation. The findings demonstrate that while certain lexical and stance-related patterns display measurable gender-linked variation, these differences are significantly moderated by role, communicative purpose, and organizational power structures. In several instances, professional register constraints reduce divergence, suggesting that institutional discourse exerts a normalizing effect on linguistic expression. The study contributes a structured reporting model for large-scale corpus research on gender in workplace communication and offers implications for fostering inclusive and critically aware language practices within professional environments.