This article seeks to aid understanding of the ways in which different policy purposes, approaches and legal options can be combined in the design of better legislation, using Australia's recently passed Public Interest Disclosure Act 2013. It provides a guide to key elements of the new legislation, as an example of legislative development taking place over a long period, informed by different trends. In particular, it is one of the first national laws to seek to integrate divergent approaches to the 'anti-retaliation' model of whistleblower protection, including its place in the employment law system, it sets new standards for the role of 'public whistleblowing' in such a regime, and provides new responses on basic questions of coverage, including which individuals are able to gain the benefit of the legislation. This provides lessons as to how different legal approaches might be better integrated, in pursuit of a clearer understanding of the interface between whistleblowing and other integrity reforms.