But the usual requirement for piercing the corporate veil is that the owner/operator of the business is using the business with the sole reason of insulation from having their private assets in the line of fire. If the business is otherwise legit and a fine were levied against the business there would be a fairly strong barrier before the assets of the shareholder become part of the story. A good precaution against this is to have more than one shareholder (preferably more than a token percentage for the second shareholder).