Definition: Job vacancy
A paid post that is newly created, unoccupied, or about to become vacant:
(a) for which the employer is taking active steps and is prepared to take further steps to find a suitable candidate from outside the enterprise concerned; and
(b) which the employer intends to fill either immediately or within a specific period of time.
European Union, Regulation (EC) no 453/2008 of the European Parliament and of the Council of 23 April 2008 on quarterly statistics on Community job vacancies