Factors influencing the assurance of sustainability reports in the context of the economic crisis in Portugal

Purpose - – The paper aims to analyse the engagement in sustainability reporting assurance (SRA) by a sample of Portuguese firms between 2008 and 2011. Design/methodology/approach - – Bivariate and multivariate non-parametric statistics is used to analyse some factors that influence the decision to have sustainability reports assured. Findings - – Results indicate that size, leverage, profitability, listing status and industrial affiliation are determinants of SRA, whereas type of ownership is not. A downward trend in sustainability reporting and its assurance was also detected. Research limitations/implications - – The sample is small. Originality/value - – It adds to the scarce research on SRA by providing new empirical data in a context of crisis and extends prior research by analysing the effects of listing status and type of ownership.

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