OECD Due Dilligence https://www.oecd.org/en/topics/due-diligence-for-responsible-business-conduct.html
Businesses and investors are of crucial importance for economic, environmental, and social progress. It is important that they avoid adverse impacts on people and the environment. The OECD Guidelines for Multinational Enterprises on Responsible Business Conduct call on companies to carry out risk-based due diligence. This due diligence process helps companies assess and address real and potential negative impacts in their operations, supply chains and business relationships. The OECD has developed guidance and tools to explain these expectations for due diligence and to support companies in putting them into practice.
Comply or Explain https://en.wikipedia.org/wiki/Comply_or_explain
Rather than setting out binding laws, government regulators (in the UK, the Financial Reporting Council (FRC), in Germany, under the Aktiengesetz) set out a code, which listed companies may either comply with, or if they do not comply, explain publicly why they do not. The purpose of "comply or explain" is to "let the market decide" whether a set of standards is appropriate for individual companies. Since a company may deviate from the standard, this approach rejects the view that "one size fits all", but because of the requirement of disclosure of explanations to market investors, anticipates that if investors do not accept a company's explanations, then they will sell their shares, hence creating a "market sanction", rather than a legal one.
National Resource Governance Institute https://www.resourcegovernance.org
NRGI’s aim is that countries rich in oil, gas and minerals achieve sustainable, inclusive development, and that people receive lasting benefits from the extractive sector and experience reduced harms.