Yes.
No matter what the culture, the magic word for any society is “consequences”. What's made whistle-blowers laws popular and the reason they have spread so much is effective education about the tragic consequences that could be avoided if it weren't for secrecy and the disasters that can be prevented when we have the knowledge to act in a timely manner. That's why whistle-blowers have gone from being pariahs to being on a public pedestal in the United States because they have made a difference.
The more that your process can foster, not just strengthening the law and adding more teeth to these rights but getting the word out about how this can make a difference in changing society, helping people's lives, and preventing unnecessary disasters or tragedies, you'll have the political support.