A comparison of prevalence of unethical tendering practices at national and subnational levels in Nigeria

Nigeria has recently renewed efforts towards stamping out corruption in every area of its national life. Given that construction procurement is particularly prone to corrupt practices, this study investigated the prevalence of unethical tendering practices in the Nigerian public sector. In particular, a comparison to bare the similarities or differences in the prevalence of unethical tendering practices at national and subnational levels is scarcely available in literature. This study’s objective was to determine and compare the prevalence of unethical tendering practices at the national and subnational levels in Nigeria. The data analysis was based on 120 acceptably filled questionnaires obtained from contractor, client and consultant organisations previously involved in public sector projects. The unethical tendering practices were analysed using prevalence indices and Mann–Whitney U tests. Findings include that the three most prevalent unethical tendering practices are contractor-based, namely: (1) competitors offer bribes to gain access to confidential tendering information (C1); (2) competitors overstate their capacity, experience and qualifications to secure construction contracts (C2); (3) the same owner(s) use different firms to tender for the same project (C3), in descending order of prevalence. No significant difference exists between unethical tendering practices in federal and state government projects. The findings of the study will help the Nigerian government and other stakeholders to better understand unethical practices at the tender stage of construction procurement in the public sector and to evolve better strategies for dealing with them. The study contributes to existing knowledge by separately identifying the prevalent unethical tendering practices in the Nigerian context and comparing unethical tendering practices at national and subnational levels within a country