<p>Several studies have been conducted to extensively examine the factors that influence professionals such as academics, nurses, building contractors, and pharmacists to share knowledge to enhance their work. This systematic review of literature suggests that studies on the knowledge sharing behaviour of planners who are supposed to coordinate the developmental agenda with other civil service professionals are shelved. Thus, understanding of the factors that influence development&#xa0;planners’ intentions to share knowledge with other professionals enhance the structural and economic development of the nation. Questionnaires were used to collect data from 115 planners in Ghana. The data was statistically tested and analysed using the structural equation modelling (SEM) technique, i.e. the SmartPLS software. The findings showed that coordination, feedback, and government policies have an influence on planners’ attitudes towards sharing knowledge to other professionals. Attitude and subjective norms also have significant effects on planners’ intentions to share knowledge with other professionals in the civil&#xa0;service. Lastly, the study found that top management also has an influence on the subjective norm of planners to share knowledge with other professionals. Unfortunately, perceived organisational support and capacity building do not influence planners’ attitude towards sharing knowledge with other professionals in the civil service. Practical implications of these findings are discussed.</p>