A contract does not have to be written to be legally binding. The law recognises three main ways by which contractual obligations may be created:
By writing
By oral statements
By conduct of the parties
The form of the contract does not determine its validity. What matters is whether the essential elements of a contract exist, namely offer, acceptance, consideration, intention to create legal relations, and certainty of terms.
An oral contract arises where parties express their obligations, promises, or representations verbally. These verbal statements may become legally binding terms of the contract if they satisfy the legal requirements.