Discuto

Disclose information to whom? Internally, externally, the media, the authorities? What if an employee/ contractor/intern has signed a confidentiality agreement?

This is covered in Article 5 and also Articles 6, 7 and 8. If the information disclosed fits the definition of a protected disclosure, the confidentiality agreement is superseded. Or at least that's the intention!

There will always be some level of subjectivity, though we do provide in Article 4 a non-exhaustive list of exactly what kinds of disclosure we mean when we talk about the public interest. As for the fact that this is work-place related, this is a structural issue within this text which comes from the fact that we had to chose a specific EU legal basis which would give the EU the competence to act: we eventually chose the improvement of working conditions as the legal basis here, but we still believe that it would be better to combine more than one legal basis: the problem is that the other most obvious one, the protection of the internal market, would also not cover the bystander who witnesses a criminal action by a police officer. Apparently the European Parliament legal services are working to identify the right legal basis, or combinations of legal bases, in order to overcome this problem...

This crucial clause is in my view completely unworkable as drafted. It has two main faults: it relies on a subjective judgment call by the WB as to what is "in the public interest or that is related to a threat or prejudice to the public interest"; and second it ties the disclosure to the WB's workplace. So, to take today's example, a bystander who witnesses a criminal action by a police officer would not be regarded as a WB...

Maybe change 'worker or contractor' into 'worker, contractor or any other person'.