most embassy wont do much if it messes with another countries immigration policies or legal system they will only make sure your being treated fairly. However what most people dont know is that your passport is property ( and not your personnel property)of the country of issue and to this extent if your company is withholding your passport the embassy can actually demand that it it is returned to them for holding until such times as the mess is straitened out. this is usually the case when a someone is arrested and chucked in prison over seas.