1. Introduction
The desire for countries to industrialized, coupled with the profit intentions of firms at the expense of the physical environment, has contributed immensely to the continuous degradation of the environment [
1]. The effects as we see today are global warming, depletion of natural resources, the incessant pollution of the natural environment, and other environmental issues which threaten the sustainability of the earth’s ecosystem [
2]. For example, Landrigan et al. (2017) [
3] submit that the lethal effect of environmental pollution causes more mortality issues worldwide than other well-known causes, such as malaria, accidents, and alcohol. Albeit the deleterious effect of environmental pollution is widely recognized, the Health Effects Institute (2019) [
4] suggest that 91% of the entire global population are exposed to its effects. This makes environmental pollution a major threat to life sustenance. The situation is not too different in Ghana as the country continues to suffer the effect of environmental destruction, which has largely been attributed to firms’ operational activities. The WHO (2018) [
5] has attributed 22,000 premature deaths annually to air pollution, while most of Ghana’s water bodies have been contaminated with cyanide. These environmental sustainability issues have instigated the increased demand for environmental accountability practice (EAP), as societal environmental consciousness in recent times has also increased [
6]. To ensure environmental accountability, firms are expected to provide justification for their actions and decisions that impact on the natural environment. This is achieved when firms report on their environmental performance to stakeholders, giving them the opportunity to evaluate the firm’s environmental assertions, and also sanctioning their operational activities or otherwise [
7,
8].
In response to the increase in demand for firm EAP, firms have begun to augment their annual financial report with an environmental report. This report, which is often integrated into the reporting entity’s financial statement or as a standalone environmental report in the annual report of the firm, is mainly on the firm’s environmental performance [
9]. According to Gray, Owen, and Adams (1996) [
8], EAP involves the disclosure of information on firms’ environmental activities to those who may be affected by such firms’ environment impacts. EAP provides opportunity to stakeholders to react and exert pressure on firms to act sustainably if their expectations concerning the firm’s environmental performance are not met. To this end, the environmental report has become a major factor considered by some salient stakeholders when taking economic decisions [
2,
10,
11,
12]. Alrazi, Villiers, and Staden (2015) [
2] argue that without environmental accountability, society may not be aware of the extent to which firms are affecting the environment and, therefore, may not be able to exert the necessary pressure to influence firms’ action and behavior towards environmental sustainability. This makes the role external pressure plays in ensuring a change in firms’ behavior towards EAP cannot be discounted [
13,
14].
However, the intense pressure on firms to engage in EAP seems to have yielded a less significant result, since most studies have found EAP low, especially among developing countries including Ghana. Hence, the question of how to influence firms to be committed to EAP continues to agitate the minds of policy makers and academics alike. The institutional theory of isomorphism has been used to explain factors that drive firms to engage in behavioral change, mostly in terms of structure and practice. Propounded by DiMaggio and Powell (1983) [
15], the institutional theory of isomorphism is the constraining process that forces one unit in a population to resemble other units that face the same set of environmental conditions. Therefore, the pressure to conform can induce firms to act in a similar manner. The question is, does institutional isomorphism play a role in firms’ EAP in Ghana? Using the institutional theory, this study seeks to answer the question posed above.
Unlike corporate financial accountability, which is a mandatory practice in most countries across the globe, EAP is often voluntary among developing countries. Prior studies have established that the level and extent of corporate social responsibility disclosures between developed and developing countries are different, with developing countries lagging far behind their developed counterparts [
16,
17]. In the case of most developed countries, the systems and structures meant to push firms to engage in EAP have been instituted and functioning [
18,
19]. This is often not the case among developing countries, which creates a gap in the literature. The voluntary nature, coupled with the hesitancy to adhere to regulations among firms in developing countries, especially Ghana [
20,
21,
22,
23,
24,
25], has also engendered low environmental accountability practices among firms within these countries [
26,
27,
28], exacerbating the issue of limited literature in Ghana. Similar to other developing countries, most studies conducted in Ghana found EAP to be low. A review of related literature also discovered that most of the studies were carried out within the mining sector [
26,
29,
30,
31]. Consequently, the level of firms’ EAP espoused by those empirical studies may not comprehensively represent Ghana’s EAP status and this could affect policies directed towards firms’ EAP.
The objective of this study is twofold. Firstly, to determine the level of EAP among environmentally sensitive firms in Ghana. Secondly, to examine the extent to which institutional isomorphic factors (mimetic, coercive, and normative) influence EAP of firms in Ghana. This current study goes beyond a single sector by extending the study to all environmentally sensitive firms in Ghana. Prior studies have explained environmentally sensitive firms as those firms whose operational activities have a major negative impact on the physical environment [
32]. Such firms may comprise manufacturing, mining, oil and gas, transport, and energy construction [
32,
33,
34,
35,
36,
37]. A study of this nature will add to the body of knowledge on institutional isomorphism and EAP of developing countries, particularly Ghana, as the findings will close the gaps in the literature. The findings will also have policy implications at both national and firm levels. The association between the isomorphic factors and EAP will provide more insight to policy makers as to where to commit resources to achieve much-needed environmental sustainability. Contextually, Ghana is having a number of environmental challenges which are creating health-related problems and hindering the country’s chances of achieving all the environmentally related SDGs within the stipulated time.
4. Results and Analysis
Table 2 shows the descriptive statistics of the firms’ characteristics. Approximately 81% of all firms included in the study belonged to the manufacturing industry, whilst 11% were in the mining industry, 4% were in the construction industry, and 2.4% were in both transport and oil and gas industries. The majority of the participants were finance managers (84%).
Ninety-nine percent of the respondents indicated that their company was a limited liability company and about 78% reported that their companies were listed on the Ghana Stock Exchange. The mean EAP score was 17.35 (SD = 21.15) and the overall ISF score was 32.14 (SD = 4.91). The average ISFM indicator was 9.41 (SD = 2.72), that of ISFC was 10.40 (SD = 2.28), and that of ISFN was 12.36 (SD = 2.37)
The reliability measure and the correlation matrix of test constructs of the dependent and independent variables are presented in
Table 3. The reliability test for constructs in the present study showed high levels of internal consistency and reliability for EAP and its sub-constructs including the HAD and SOD. The overall ISF was 0.78, and its sub-constructs were ISFM (0.69), ISFC = 0.71, and ISFN = 0.77. These reliability levels were above the threshold recommended by Bryman and Bell (2011) [
58], who suggest 0.6 and 0.7 as acceptable Cronbach’s alphas.
The nonparametric Spearman’s rho correlation coefficient was examined for ISF (
p < 0.05) and EAP (
p < 0.05) variables. These variables showed a deviation from the assumption of normality, with the exception of the ISF variable (
p = 0.05) which was shown to be normally distributed. As shown in
Table 3, the Spearman’s rho correlation coefficient among the independent sub-construct variables of ISF, including ISFM, ISFC, ISFN, were less than 0.5. Thus, the concern of multicollinearity was not significant, and all the variables were kept in the subsequent regression analyses that involved the three distinct dimensions of ISF. The correlation coefficient between the independent variable ISF and EAP, although significant, showed a weak relationship. Evidently, the two sub-constructs, HAD and SOD, of the dependent variable EAP showed no significant correlation in all but one independent sub-construct ISFN (
p = 0.204,
p < 0.01).
Next, a series of multiple regressions were performed to predict the EAP outcome measures and are presented in
Table 4. The first three models introduced the unadjusted associations of the independent variables and the outcome, whilst the fourth model adjusted for the key exposure variables but was independent of the covariates. The results in Model 1 revealed that observing a higher level of ISFM by a firm was significantly associated with increases in EAP (
β = 0.861,
p < 0.005). Similarly, having increases in ISFN by a firm was significantly associated with increases in EAP in Model 3 (
β = 1.704,
p < 0.05). The significance persisted in Model 4 after adjusting for the prime independent variables although with slight changes in the magnitude of the respective effects, whilst the relationship between the ISFC and EAP remained inverse and reached no significance.
Table 5 shows the results of the effect of mimetic, coercive, and normative isomorphic factors on EAP, with further adjustments for the firm characteristics as potential confounders. Model 3 indicated that the ISFN was significantly related to EAP, even after controlling for the firm’s characteristics (
β = 0.553,
p < 0.05). An examination of the covariates showed that firms that had a foreigner on their board of directors (
β = 1.544,
p < 0.05), and audit (
β = 22.195,
p < 0.001) were more likely to engage in EAP. Those listed on the GSE had a lower score in the EAP (
β = −14.014,
p < 0.005).
An additional analysis was performed to investigate the associations between a composite ISF score and EAP and is presented in
Table 6. Model 1 presents the results for all control variables, while Model 2 shows the results of the main effect. ISF was positively related to EAP, albeit the relationships were not robust (
β = 0.243,
p = 0.054).
5. Discussion and Conclusions
Previous research has shown considerable evidence of the associations between specific isomorphic factors and environmental accounting practices (EAP) among establishments at various levels and sizes. However, very few studies included all constructs as a whole and research on this subject is limited in Ghana. Literature on isomorphism has seldom investigated EAP as an outcome of isomorphism. Using institutional theory and current cross-sectional data, this paper examined the degree of the contribution of institutional isomorphic factors on EAP among environmentally sensitive firms in Ghana.
Our findings indicate that higher levels of mimetic isomorphism pressure positively related to promoting environmental accountability among firms. In the present study, the normative pressure was more likely to increase EAP within the context of potential confounders. The robustness of the relationship persisted even after adjustment for key independent variables, viz., the coercive and normative pressures. In addition, after full adjustments for the important characteristics of the firm and all potential confounders, the normative factors were significantly related to EAP with a slight decrease in the effect size, supporting the study’s third hypothesis. Thus, among firms that highly experienced the normative pressures in the operational activities, the promotion of EAP was highly upheld. However, whilst the mimetic lost its significance after controlling for the firm’s characteristics, the coercive factors did not show any relationship with the EAP altogether. Thus, this study sheds light on the associations of institutional isomorphism and EAP among firms, an under-explored topic in Ghana and many other low- and middle-income countries with meaningful implications for environmental accountability.
The findings imply that firms in Ghana often benchmark other firms that are noted to be the best in terms of engaging in EAP. This may be because EAP is still voluntary, and also emerging. Therefore, there are no specific guidelines that regulate the practice in Ghana. This creates uncertainties among firms, which consequently influences them to imitate other firms who are already practicing EAP and are doing well. The results are consistent with Pfarrer et al. (2005) [
59] and Setyorini and Ishak (2012) [
44] who observed that in order to achieve operational legitimacy, firms that are not doing well end up adopting similar reporting practices of best-performing firms. This finding is different to Nyahas et al. (2017) [
51] who found a less significant association between mimetic influence and voluntary disclosure. Similarly, Welbeck (2017) [
60] did not find mimetic pressure to influence corporate responsibility disclosures in Ghana. Welbeck’s [
60] study was limited to 17 listed firms in Ghana, and this could account for the disparities. Listed firms are more regulated by not only the government agencies but also the Securities and Exchange Commission of Ghana and thus, are more likely to be influenced by these bodies than to be influenced by other firms’ behavior. The current study covered all environmentally sensitive firms, listed or not, which may have accounted for the findings.
The present analysis found a significant relationship between normative isomorphism and EAP in Ghana. This finding is not surprising and agrees with a number of previous observations that established strong relationships of normative pressures with EAP in diverse global contexts [
60,
61,
62,
63]. In the context of Ghana, to a large extent, the preparation of the financial or annual report of the reporting entity rests with the accountant of the entity. These accountants are mostly professionals who have gone through professional training and are guided by the professional rules, norms, and ethical standards associated with their professional bodies. Thus, these professional accountants are more inclined to adhere to standards and norms considered legitimate by their professional associations and groupings. Similarly, this presupposes that decisions and actions by professional associations may likely influence a firm’s behavior toward EAP in Ghana.
Our analysis established no significant relationship between coercive pressure and environmental accountability. This finding is consistent with an earlier study reporting no association between coercive pressure and voluntary disclosure among firms in the USA [
59]. This suggests that pressure from regulatory bodies, such as the Environmental Protection Agency, the Minerals Commission, and other industry-specific regulators, to a larger extent, do not influence firm EAP in Ghana. Though this defies consistency with most studies on coercive isomorphism and EAP [
16,
51], in the context of Ghana, this finding is not surprising, as firms in Ghana have been found to have issues with conforming to regulations, which is mainly due to deficiencies in law enforcement [
20,
21,
22]. Mere laws and regulations may not exert effective influence without a corresponding appropriate enforcement practice [
62,
64,
65].
Some limitations of the present study should be acknowledged. First, the cross-sectional nature of the data prohibits clear conclusions about directionality and causality. It might be the case that the EAP score could influence any of the isomorphic factors, including the mimetic, coercive, and normative pressures, but this was not captured as an objective of the study. Further research will benefit from the use of longitudinal data and exploring bidirectional relationships between institutional isomorphism and EAP. Moreover, the sample size for this study was not large enough, which could have tempered with the robustness of the finding. However, given that the environmentally sensitive firms who responded to the questionnaires and included in this analysis are not many (approximately 200), our findings will serve as a good snapshot and basis for further research in other low- and middle-income countries, particularly where a larger sample is available. Another limitation might be the measurement of key variables, recall bias, as well as the failure of the respondents to provide credible responses to sensitive issues. These can potentially result in a socially desirable bias and thwart the findings of the study.
Despite these limitations, the current study nevertheless expands previous research and demonstrates the effects of institutional isomorphism (particularly the mimetic and normative pressures) on EAP, a very important but less explored area particularly in Ghana and other low- and middle-income countries. Policy makers and practitioners should be aware of these implications on operational activities of firms in Ghana and beyond. The implications of the current study could also serve as a baseline and guide future research endeavors in similar low- and middle-income countries given that research on this all-important topic is still nascent in these settings.