Corporate meetings, whether of directors, shareholders, or members, can be regular or special. Meetings allow for a majority to make binding decisions for the corporation, provided proper notice was given and the meeting was properly called and conducted. Key elements of meetings include quorum requirements, voting procedures such as by proxy, and rules for joint ownership of shares. Stock certificates must be issued following certain requirements and signed by corporate officers, and transfers recorded by the corporation in order to be valid against the company. Consideration for shares cannot be less than par or issued value, and can include assets, labor, or previous debt as well as cash.