• B. Econ. (KU)
• M.A Econ. (UoN)
• PhD (UESTC- China)
• CPA (K)

He has gone through the following trainings:

1. CPC Supervision Course- Rhodes University
2. Pedagogy Training- Chuka University
3. Business and Customer Management Training- Metropol Credit Reference Bureau
4. Data Analysis – SPSS, Stata and R-GUI

Previous Positions Held
Dr. Onesmus previously held the position of exam coordinator in the Department of Economics, School of Business and Economics, SEKU. He was a part time lecturer in economics at Chuka University before joining SEKU. He previously worked at Imperial Bank Limited, Metropol Credit Reference Bureau, Mhasibu Sacco Limited and CIC Insurance Group.

• Member of the Economists Society of Kenya (ESK)
• Membership in Committees
• Member of the Research and Innovation Committee of South Eastern Kenya University.

Research Interests:

• Macroeconomics, Development Economics, Monetary Economics

Dr. Onesmus has supervised seven (7) master’s students to the completion of their theses. He is currently supervising master’s and PhD students. He has also engaged in the internal examination of master’s thesis (MSc Economics).

Conferences and Workshops

1. Chuka University Faculty of Humanities and Social Sciences Conference held on 11th and 12th July 2024.
2. The 2024 Annual Economists Conference held at Pride Inn Paradise Mombasa from 6th to 10th May 2024. The conference was organized by the Economists Society of Kenya (ESK).
3. International Conference Held at Chuka University in 2023. The conference theme was ‘Mainstreaming Research, Innovation and Technology Transfer and Commercialization for Sustainable Economies (MRIT-TCSE)’
4. SBE Postgraduate Supervision Workshop held at Kitui Town Campus in SEKU, 2023.
5. Research and Innovation Week organized by SEKU in 2022.
6. International Conference on Emerging Markets at Sichuan University (China) in 2017.
7. The Emotional Intelligence Training Workshop held at South Eastern Kenya University (SEKU) on 4th and 5th February 2025.

Publications

1. B. Chepkorir, O. M. Mbaabu, L. Maugu & M. Thuo. (2024). Effect of Financial Deepening on Private Investment in Kenya. International Journal of Research and Innovation in Social Science (IJRISS), 8 (9), 2621-2636. https://dx.doi.org/10.47772/IJRISS.2024.8090218
2. R. Juma, D. Muriithi, O. M. Mbaabu. (2024). Effect of Public Wages on External Debt in Kenya. Science Research, 12 (5), 109-116. https://doi.org/10.11648/j.sr.20241205.12
3. O. M. Mbaabu, J. Nzomoi, & P. Kamoni. (2024). Financial Development and Its Effect on Inclusive Growth in Kenya 2000 – 2022. International Journal of Economics, 9(3), 1–20. https://doi.org/10.47604/ijecon.2570
4. P. Kamoni, O. M. Mbaabu, S. Wamitu & R. Ombati. (2024). Public Procurement Price Variance in Kenya: Extent, Drivers, and Proposed Mitigation. European Journal of Logistics, Purchasing and Supply Management, 2 (2), 1-13. https://doi.org/10.37745/ejlpscm.2013/vol12n2113
5. W. Kimanzi, A. C. Kabui & O. M. Mbaabu. (2024). Effect of Knowledge Succession on Business Continuity of Community-Based Organizations in Kitui County, Kenya. International Journal of Business and Management, Volume 19, 4: 201-2013. https://doi.org/10.5539/ijbm.v19n6p13
6. O. M. Mbaabu, Q. Ju & K. Dumor. (2020). Sustainable Development in Sub-Saharan Africa: The Impact of Infrastructure on Wealth per Capita. International Social Science Journal, Volume 69, 233/234: 199-212. https://doi.org/10.1111/issj.12226.
7. O. M. Mbaabu, Q. Ju & K. Dumor. (2020). Infrastructure and Inclusive Growth in Sub-Saharan Africa: An Empirical Analysis. Progress in Development Studies, 20 (3): 187-207. https://doi.org/10.1177/1464993420927507.
8. O. M. Mbaabu & M. O. Oleche. (2015). Financial Sector and Economic Growth in Kenya: The Case of Credit Reference Bureaus, International Journal for Novel Research in Marketing and Economics, Volume 2, (3): 145-153.
9. K. Dumor, Y. Li, A. M. Enock, C. H. K. Essel, E. O. Essel & O. M. Mbaabu. (2021). Situating Africa in the Exports Patterns of China’s Belt and Road Initiative: A Network Analysis, African Development Review, 33 (2): 343-356.
10. M. Adan, D, Muriithi & O. M. Mbaabu (2023). Effect of Human Capital Investment on Income Inequality in Kenya, European Journal of Development Studies, 3 (4): 30-40.
11. K. Dumor, Y. Li, O. M. Mbaabu & J. Frempong. (2022). The Impact of China’s BRI on Economic Integration in Eastern Africa: A structural Estimation Framework. International Journal of Finance and Economics, 1-16.
12. A. Kamuti, K. Wachira, & O. M. Mbaabu. (2023). Influence of Process Innovation on Performance of Civil Registration in Kitui County. Journal of Strategic Management, 8(2), 34 - 46. https://doi.org/10.53819/81018102t2413
13. C. N. Chege, L. K. Maugu, M. Thuo & O. M. Mbaabu. (2024). Effect of Recurrent Government Expenditure on Private Investment in Kenya, International Journal of Research and Innovation in Social Science (IJRISS), 8(10), 2976-2988. https://dx.doi.org/10.47772/IJRISS.2024.8100250

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