The provided case scenario involves Bill, who was employed by XYZ Diaries and was responsible for recruiting minors for work. Despite the employer's prohibition, Bill recruited a minor who got injured due to his negligence. As a result, Bill will be held liable for the act of negligence. Additionally, XYZ Diaries will also be held vicariously liable as it was their duty to ensure that guidelines were followed and minors were not employed by workers. Vicarious liability applies when an employer is held responsible for the negligent actions of their employees, provided certain conditions are met. In this case, the friend of the owner of a vintage vehicles museum's criminal conduct would not be considered under vicarious liability.