Cancellation of law or order. Either party may terminate this agreement with immediate effect if another frequent case of termination clauses is the employment contract. They are used here to define faults or offenses that can lead to the dismissal of an employee. Such behavior may include unexcused sick leave, repeated delays, or unsatisfactory work. It also explains the circumstances in which a worker may terminate his employment relationship before the contractual notice. This type of contract is often used in construction contracts that allow the owner to complete the contractor`s work as he pleases. This type of contract was first created by the use of federal purchase contracts. .