Providing employers with a code of good practice can help them to navigate the existing legislation, which can often be complex, and reduce non-compliance. Lowering the burden of proof for plaintiffs and shifting it to employers can be a step in the right direction, but should be accompanied by measures to help complainants gather the necessary evidence to initiate the case and sustain the costs of the trial (OECD, 2008, Chapter 3). In the early 2000s, most European countries lowered the burden of proof for plaintiffs, who are now only required to provide evidence of differential treatment without having to prove that it was indeed due to discrimination.