The study explores relationship between organization structure and perceived innovation, with moderating effect of technical complexity. Structure comprises centralization, concentration of authority, participation-indecision- making and formalization. Innovation is measured by perceived innovation. A scale for perceived innovation has been designed and validated for the study. The sample consisted of 250 employees who responded to questionnaires, 171 in-depth interviews were also conducted. Data was analyzed using both statistical and qualitative techniques. Correlation, two-way-ANOVA, graphed simple effects and content-analysis were used to compute results. Positive relationship was found between participation-indecision- making and perceived innovation, and formalization and perceived innovation. Negative relationship was found between centralization and perceived innovation. Technical complexity moderated the relationship between formalization and perceived innovation, and concentration of authority and perceived innovation.