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PurposeThis paper seeks to address the effect that principle‐based corporate governance practices have on the financial performance of large publicly‐listed companies. In 2004, the New Zealand Securities Commission (NZSC) promulgated nine high level principles and guidelines for all business entities with an aim of improving corporate governance practices and boosting investor confidence in the New Zealand capital market. This event provides a point for empirically testing companies' responses.Design/methodology/approachPanel data for the NZX top 50 companies over the period 1999‐2007 are analysed using ordinary least squares (OLS) and two stage least squares (2SLS) regression techniques to evaluate whether: those firms that were continuously compliant with the NZSC requirements perform better; and the firm performance post‐NZSC recommendations is better than pre‐NZSC recommendations. Tobin's Q, market‐to‐book (MB) and return on assets (ROA) metrics are used as dependent variables..FindingsThe findings indicate that large listed companies have universally adopted the Securities Commission recommendations, establishing subcommittees for audit and remuneration, and having a majority of non‐executive/independent directors on the board which, on average, have seven members. There is support for the view that the NZSC recommendations have had positive influence on firm performance measured by Tobin's Q, MB and ROA. The results show that the presence of a remuneration committee has had a positive influence on firm performance.Research limitations/implicationsThis study provides empirical support for the corporate governance recommendations made by the NZSC in 2004, giving support to the principle‐based corporate governance practices to be adopted in New Zealand. The sequential testing of each NZSC recommendation provides a comprehensive picture of performance outcomes which has not been achieved in prior research. The interdependency issues are of interest and the correlation between recommendations provides useful insights.Originality/valueThis study offers insights for policy makers interested in adopting principle‐based corporate governance practices within their country. Within New Zealand, public policy developments and stock exchange listing requirements/regulatory issues with associated compliance burdens are better informed as a consequence of the research.

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We investigate the relation between board gender diversity and firm profitability using the control function (CF) approach recently suggested by Wooldridge (2015). The CF method takes account of the problem of endogenous explanatory variables that have potential to bias the results. Using a sample of firms that made up the S&P 500 over the period 2004-2015, we find that the presence of women on corporate boards (measured either by the percentage of female directors on corporate boards or the Blau index of heterogeneity) has a positive and significant (at the 1% level) effect on firm profitability (measured by the return on assets). We compare our results to more traditional approaches (such as pooled OLS or the fixed-effects model). Through this study, we shed light on the effect of women on corporate boards on firm performance, as it is still a controversial issue (Post and Byron, 2015).

Prior research suggests that Corporate Environmental Performance (CEP) enables businesses to build strong corporate image and reputation, thus leading to improved firm financial performance. However, studies relating to the relationship between CEP and firm risk are scarce. This research intends to bridge the gap in the literature by examining whether CEP helps firms to reduce their financial risk. Results of the Ordinary Least Squares regression with fixed effects provide strong evidence that environmental performance is negatively associated with firm volatility and firm downside risk. The results are robust after controlling for moderating effects such as financial, institutional and environmental management.

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