When a contract clause is modified in an agreement, it is commonly known as an amendment. An amendment is an official change or addition to an existing contract or legal document. It can be made to a variety of legal agreements, including employment contracts, lease agreements, and sales agreements, among others.

Amendments are typically made to address changes in circumstances or to clarify existing terms within a contract. For example, an amendment may be made to an employment contract to extend the length of employment or to alter the terms of payment. Similarly, an amendment to a lease agreement may be made to address changes in rent payments or to add or remove specific conditions.

Amendments to a contract must be properly executed and documented to be legally binding. To do this, the parties to the contract must agree to the changes and sign the amended agreement. Depending on the complexity of the amendment and the number of parties involved, the amendment process may also require additional legal review or approval.

It is essential to note that not all contract clauses can be amended. In some cases, certain clauses may be considered non-negotiable or fundamental to the agreement and therefore cannot be changed. These clauses are typically outlined in the original agreement and are referred to as “non-modifiable clauses.”

In summary, when a contract clause is modified in an agreement, it is known as an amendment. It is a legally binding change or addition to an existing contract that requires proper execution and documentation to be valid. As a professional, it is important to use the correct terminology when discussing legal matters to ensure accuracy and clarity in your writing.