15 Pa. C.S. § 2335
A written agreement among shareholders of a statutory close corporation, or any provision of the articles or bylaws of the corporation, which agreement or provision relates to any phase of the affairs of such corporation, including but not limited to the management of its business or declaration and payment of dividends or other division of profits or the election of directors or officers or the employment of shareholders by the corporation or the arbitration of disputes, shall not be invalid on the ground that it is an attempt by the parties to the agreement or by the shareholders of the corporation to treat the corporation as if it were a partnership or to arrange relations among the shareholders or between the shareholders and the corporation in a manner that would be appropriate only among partners and shall not be grounds for imposing personal liability on the shareholders for obligations of the corporation.
15 Pa.C.S. § 2335