You are most likely an officer of the company (unless you are "CTO" informally?). You know the company to be violating local employment law and taxes. You proba

You are most likely an officer of the company (unless you are "CTO" informally?). You know the company to be violating local employment law and taxes. You probably have an obligation to attempt to do something about this if your CEO will not. Conversely, you may (?) bear some responsibility if you do not take action. IANAL, and this is not free legal advice. My advice is to talk to a lawyer ASAP. Your inital consultation is likely to be free of charge. Consult.