Negligence in Selection of Employee

As the employer of Gerosano, petitioner is primarily and solidarily liable for the quasi-delict committed by the former. Petitioner is presumed to be negligent in the selection and supervision of his employee by operation of law and may be relieved of responsibility for the negligent acts of his driver, who at the time was acting within the scope of his assigned task, only if he can show that he observed all the diligence of a good father of a family to prevent damage (Estacion v. Bernardo, G.R. No. 144723, February 27, 2006).