AdeOluwa Ope. Adenaike
March 2026
Abstract
Ethical decay is often treated primarily as a moral or governance concern, yet its consequences extend into household welfare, economic behaviour and sustainable development. This study evaluated the economic costs of ethical decay in Ijebu-Ode Local Government Area, Ogun State, Nigeria, with particular attention to how unethical practices affect household economic well-being and contribute to development risk. The study adopted a mixed-methods approach, combining household-level quantitative data with qualitative evidence from in-depth interviews, key informant interviews, focus group discussions and direct observation. Data were analysed using the Statistical Package for the Social Sciences (SPSS) and NVivo to identify the forms and economic implications of ethical decay and variations across socioeconomic groups.
The findings indicate that ethical decay generates significant and often hidden economic costs for households. Respondents reported losses associated with bribery, extortion, bureaucratic inefficiency, preferential treatment and other unethical conduct. Affected households may lose approximately 10–25% of annual income, equivalent to about ₦210,000 (approximately US$158 at the prevailing official exchange rate), reducing resources available for consumption, savings, investment and household resilience. The burden is particularly consequential for lower-income households, for whom such payments function in effect as a regressive quasi-tax, consuming a larger proportion of available income and reinforcing socioeconomic disadvantage. These losses can constrain families’ capacity to accumulate assets, invest in human capital and sustain livelihoods, potentially reproducing poverty and limiting productive participation in civic and economic life. This significance is underscored by the international extreme poverty benchmark of US$3 per person per day in 2021 purchasing power parity (PPP) terms, against which recurrent economic losses may be particularly consequential for households with limited financial resilience.
The study further demonstrates that the economic consequences of ethical decay extend beyond individual households to conditions required for sustainable development. By increasing transaction costs, weakening institutional reliability, impairing equitable access to services and diverting household resources from productive and welfare-enhancing uses, ethical decay can undermine progress towards the Sustainable Development Goals, particularly SDGs 1 (No Poverty), 8 (Decent Work and Economic Growth), 10 (Reduced Inequalities) and 16 (Peace, Justice and Strong Institutions).
The study therefore conceptualises ethical fragility not solely as a moral or institutional deficiency but also as a measurable source of economic and development risk. It contributes to the development of the Ethical Fragility Index (EFI) and the Unethical Loss Ratio (ULR) as complementary approaches for understanding and measuring the economic consequences of ethical decay. It further develops the Circular Cost Feedback Loop of Ethical Decay, which explains how unethical practices generate economic losses that weaken household and institutional capacity, create further vulnerability and reproduce or intensify subsequent costs. Together, these contributions advance the Invisible Economy perspective by making visible economic losses often dispersed, informal or insufficiently captured by conventional measures. The study concludes that strengthening ethical conditions can preserve household resources, strengthen livelihood resilience, improve institutional effectiveness and expand the foundations for inclusive and sustainable development.
Keywords: Ethical decay; Ethical Fragility Index; Unethical Loss Ratio; Circular Cost Feedback Loop; Invisible Economy.
The dissertation has been developed into a series of four books, collectively titled *The Invisible Economy*. Browse the Resources Hub to explore and obtain copies of these works. Click here.