Corporate social responsibility (CSR) has greatly influenced business communication. CSR reporting has become the main tool through which organisations worldwide communicate their economic, social and environmental performance. Just as this practice is consolidated, the need for credible information in this area is critical. As a result, some companies subject their CSR reports to an assurance process. Several studies have analysed CSR reporting and assurance among stock companies, but few authors have developed a non-stock firm perspective. Given the shortage of prior research, we analyse these practices, focusing on cooperative and mutual organisations because, as social enterprises, they have a special link with CSR, and they represent another kind of firm with different transaction costs. By combining statistical and content analysis methods, we aim to identify the determinants that influence the adoption of CSR reporting and assurance, the choice of assuror and the quality of assurance statements. The findings reveal that size is positively but non-linearly related to reporting, while country and sector significantly affect the adoption of reporting and assurance. Assurance statements substantially differ across providers and their quality depends on size, sector and assuror, exhibiting interactions between size and assuror and between sector and assuror.

Sustainability reporting and assurance have considerably increased in the last decades. Among different sectors, 'sensitive sectors' attracted the attention of many academics. However, most of research works were focused only on 'environmentally-sensitive sectors'. Therefore, after the loss of trust caused by the lack of transparency due to the crisis, 'socially-sensitive sectors' as financial services sector needs to strengthen users' confidence in the credibility of their reported activities. The aim of this paper is to assess assurance practices worldwide in one of the main 'socially-sensitive sectors': the financial services sector. We study what factors are associated with adoption of assurance and choice of assurance provider, and whether assurance statements differ across providers. Our results reveal that, compared to the global context, companies operating in the financial services sector are more likely to adopt assurance and to choose accountants as assurance providers. Our findings show that adoption of assurance depends on company size. We also found that companies using the financial services sector supplement are more prone to adopt assurance. Our results also evidence that choice of assurance provider depends on the country and listing status Finally, our research shows a great variability in assurance statements across providers.

Sustainability Assurance (SA) is increasing worldwide. Cooperatives are highly susceptible to CSR but there is an interesting research gap regarding SA in them. We use mixed research methods (statistical and content analysis) to study SA practices of the top 300 cooperatives worldwide. Paradoxically, our results show scarce or late SA adoption, and country-level and sector sensibility do not affect SA adoption significantly. Conversely, country-level and sector sensibility influence the choice of the assurance provider. Finally, findings reveal that country-level and industry factors, and also the assurance provider, do affect assurance statements' quality.

Members' shares in co-operative entities are financial instruments with particular characteristics. In this paper we analyse the relation between firm leverage and systematic risk to provide empirical evidence on the economic substance of the member shares of members of cooperatives. We have studied the characteristics of members' shares in six European countries: France, Germany, Italy, Portugal, Spain and United Kingdom. We have also conducted tests on co-operatives of these countries over the period 1993-2005. The study reports that in global terms the economic substance of the redeemable part of equity in cooperatives is not the same across countries. Therefore if accounting standards setters want to develop a global standard for co-operatives, a recommendation derived from this study would be to follow a probabilistic model to classify the redeemable part of co-operative financial instruments, where the entity does not have the unconditional right to refuse the redemption, or to report this part as an intermediate item with characteristics of debt and equity.

Cooperative banks, as a social economy institution, have a special relationship with sustainability. Given the lack of previous studies, we aim to develop an exploratory analysis on sustainability reporting in European cooperative banks. On one hand, we studied the sustainability reporting evolution to know whether the crisis influenced on this practice. On the other hand, we compared cooperative reports with banks' reports. Moreover, we analysed the sustainability reports content to know what information is disclosed by cooperative banks.The results show that although the number of cooperative banks' reports is low, it responds to the weight in the European market. They also illustrate the late incorporation of cooperative banks into sustainability reporting (consequence of their conservative nature). We cannot conclude that differences between banks and cooperative banks were significant, but -in relation to private banks-cooperatives stand out in the use of latest standards, integrated reporting and best application levels. Regarding to the content of sustainability reports, cooperative banks provide more social issues than economic or environmental issues. In the current situation, disclosing information about sustainability would help to reinforce the stakeholders' trust.