Which guideline is not part of Sissela Bok's recommendations for whistleblowers?

Sissela Bok's recommendations for whistleblowers emphasize the importance of having specific evidence and addressing immediate issues, as well as the necessity to exhaust internal remedies before taking further action. The guideline stating that a whistleblower must have worked for the organization for several years is not part of her framework. This principle suggests that long tenure is required for someone to be credible or to have adequate knowledge to report wrongdoing, which is not a stipulated requirement in Bok's ethical guidelines.

Bok's work focuses more on the ethical implications and responsibilities surrounding the act of whistleblowing rather than establishing a minimum duration of employment as a criterion for being able to blow the whistle. This highlights the understanding that ethical concerns can arise at any point in an individual's tenure at an organization, and being new or having a shorter duration of employment should not preclude someone from reporting unethical or harmful conduct.