Whether you order something from Amazon on the Internet, the agreement with your power company on a major order of 300,000 printed circuit boards from Korea, contracts will be involved. Most of the time, the existence of a contract will go virtually unnoticed, and this is often proof of a well-drafted contract. What you don`t want to know is that there is a problem with your contract when you walk through the door of a courthouse with a disgruntled party on the other side. Legally, to be bound by a contract, a company must be signed by a person authorized to do so. This would normally be a director of the company, his lawyer or a manager. Also check if the signatories have a “capacity”. Under English law, a person under the age of 18 is not able to enter into a contractual agreement. Contracts signed by drunkards, mentally ill, overt mentally ill people can be cancelled by a court. In England (and in jurisdictions that use English contractual principles), parties must also exchange “consideration” to create “reciprocity of obligation,” as in Simpkins v. Country.  A contract is a legally binding document between at least two parties that defines and regulates the rights and obligations of the parties to an agreement.  A contract is legally enforceable because it meets the requirements and approval of the law.