1. Introduction
Over the past 300 years, 85% of the planet’s wetlands have being lost, more than 733 million people lives are in high water stress, 1.6 billion people need safely managed drinking water, 1.90 billion people lack basic hand hygiene facilities, 2.8 billion people lack safely managed sanitation, 2.4 billion people are using insufficient and polluting cooking systems. Plastic pollution as at 2021 is estimated to be 17 million metric tons, which is expected to double or triple every year. Ocean absorbs estimated ¼ of global annual carbon emissions. Consequently, the rate of collections of global wastes as far region indicated that Latin America and Caribbean had 1.2 %, Europe and North America had 146.9 % sub-Saharan Africa had 1.6 %, and others had 22,8% collected waste [
1].
Moreover, global energy consumption had increase from 1.3 to 1.9 tons of oil equivalent from 1965 to 2015 [
2]. For example, African continent has not been different from other industrialized continents that have been battling with sustainability issues. Some authors argued that the continent faces sustainability issues due to ineffective institutions to manage resources sustainably [
3]. Similarly, Sub-Sahara countries are facing sustainability development challenges [
4,
5]. About 34% of companies operating in Nigeria tagged climate change as financial risk factor undermining their operations [
6].
Nigeria’s sustainability challenges include; high corruption issues, high poverty rate; about 90 million Nigerians’ lives are in poverty, insecurity claimed over 77.000 lives in the country, 70% per cent of Women face gender inequality, and solid waste of about 32 million tons per year is on the increase. Also, emissions from energy sector amount to 56% per-cents, transportation 28% per-cents, oil and gas sector accounts for 12% per-cent, and agriculture produces 4% per-cent emissions [
6]. About 93.51% pollutants mainly from tannery industry and other industries have contributed to lose of lives of over 700,000 people every year in Nigeria, [
7]. These contributed to sustainability campaigns that made some companies to engage in sustainable activities across the country [
6]. For example, Dangote group of companies was quoted spending about N102 million, N40 million, N78 million on settlement, health, and education respectively. In addition to 37, 000 created jobs in 2019 for sustainable development in Nigeria [
8].
Sustainability Development Goals of 2030 emblems seventeen 17 goals. These include; no poverty, zero hunger, good health and wellbeing, quality education, gender equality, clean water and sanitation, affordable and clean energy, decent work and economic growth, industry, innovation and infrastructure, reduced inequalities, sustainable cities and communities, responsible consumption and production, climate action, life below water, life on land, peace, justice and strong institutions, and partnership for the goals [
9]. However, at firm level, sustainability performance focuses on economic, environmental and social performance of manufacturing firms [
10,
11].
To achieve sustainability performance at firm level, some studies concluded that structures, technology innovations, and policies adoption significantly contribute to sustainable performance [
12,
13,
14], others argued that, government regulations, effective legislations enactment and enforcement significantly contribute to environmental sustainable performance [
15,
16]. Moreover, sufficient budget on sustainability implementation was concluded to have positive correlation with sustainable performance of firms [
17]. Furthermore, sufficient infrastructure, and facility for sustainable operations integration in business process was found positively significant on sustainable performance of firms [
16]. Also, promotion of public awareness on sustainable products, was found to have positive significance on sustainable performance of firms [
18,
19]. Likewise, integration of sustainable proactive plans found to have positive significant impact on sustainable performance [
20], implementation of sustainable waste management significantly reduce environmental waste and contribute to sustainable environment [
21], and use of environmental competencies yield positive significant impact on sustainable performance [
22].
Previous studies used multiple data collection instruments; questionnaire, field coexistence interview to collect data for sustainable performance assessment [
23], others employed single data collection technique [
24,
25]. Also, some researchers used case study design; using observational and qualitative data in assessing firm performance [
26]. Further, some authors used quantitative survey design in assessing sustainability performance [
25,
27]. Despite the use of single and multiple measures to assess sustainable performance, there exists no empirical research that adapted United Nations Sustainability development goals (SDGs) ‘goals 8 decent job and economic growth’ as a metric of performance at firm level in sub-Saharan Africa, and most particularly in Kano, Nigeria. Therefore, based on these research gaps, this research used non-financial metrics adapted from goal 8 decent jobs and economic growth of the United Nations Sustainability development goals 2030 as measure of firm performance. However, this study examines the effect of corporate sustainability on performance manufacturing firms in Kano metropolis, Nigeria.
The following hypotheses were formulated to guide this study, holding visionary strategy constant on the relationship between independent variables and dependent variable as follows:
- H1:
Conservative eco-efficiency strategy does not significantly influence sustainable performance (economic) of manufacturing firms in Kano Metropolis in Nigeria
- H2:
Extroverted legitimation strategy does not significantly influence sustainable performance (economic) of manufacturing firms in Kano Metropolis in Nigeria
- H3:
Introverted risk-mitigation strategy does not significantly influence sustainable performance (economic) of manufacturing firms in Kano Metropolis in Nigeria
5. Discussion
The results obtained from Analysis of cross sectional data collected from respondents of this research showed different results. Four Hypotheses were raised as can be observed in figure 1, there is a substantial predictive power for the key endogenous constructs for the proposed research model i.e., R2 = 0.516, IRS-SPE t-value = 1.106, ELS-SPE t-value = 1.086, CES-SPE t-value= 3.084 and VS-SPE t-value = 15.536. Hence, the research models explained a considerable degree of variance for the endogenous variables. Firstly, Hypothesis one depicts that the t-value of Conservative Eco-efficiency strategy is 3.084 with p-value of 0.002. Therefore, the hypothesis was rejected which implies that Conservative eco-efficiency strategy significantly influence sustainable performance (economic bottom-line) of manufacturing firms in Kano Metropolis Nigeria when controlled by visionary leadership strategy. The secondly, Hypothesis two indicates that extroverted legitimacy strategy has t-value of 1.086 with p value of 0.278 which is greater than 0.05. Therefore, the hypothesis two was accepted which implies that extroverted legitimation strategy does not significantly influence sustainable performance (economic) of manufacturing firms in Kano Metropolis Nigeria, when controlled by visionary leadership strategy. Thirdly, Hypothesis three has t-value of 1.106 with p value of 0.269 which is greater than 0.05. Therefore, the hypothesis three was accepted which implies that introverted risk-mitigation strategy does not significantly influence sustainable performance (economic bottom-line) of manufacturing firms in Kano Metropolis Nigeria, when controlled by visionary leadership strategy. Lastly, Hypothesis four has t-value of 15.536 with p value of 0.000 which is less than 0.05.
5.1. Theoretical Implications
Resource-based theory explain the relationship between eco-efficiency and economic bottom-line. Eco-efficiency in terms of quality control system, total quality management system, energy monitoring and information system, and process safety management significantly influence economic bottom-line of sustainable performance. Also, Stakeholder theory implicitly shows that visionary leadership with emphasis on ethical behaviours and human rights, consistent stakeholder relationship management, sustainability development management system, corporate citizenship, significantly influence economic bottom-line [
9] of manufacturing firms.
Based on results of this research, non-financial measurements of economic bottom-line in line with United Nations Development Goals can be used to measure sustainable performance of firms. Moreover, cross sectional data can be employed to assess sustainable performance, in addition to diverse multi industry data from different department like purchasing, finance, etc.
5.2. Managerial and Practical Implications
Based on the findings of this research, industry players should focus on eco-efficiency strategy to increase their economic bottom-line as it significantly influence sustainability performance of firms. Industry players should formulate and implement policies with emphasis on quality control system, total quality management system, energy monitoring and information system, process safety management, innovation and infrastructure, leaders of manufacturing firms need to imbibe visionary leadership with emphasis on ethical behavior and human rights, consistent stakeholder relationship management, sustainability development management system, and corporate citizenship so that their targets on sustainable performance can be achieved.