1 According to the European Job Vacany Statistics, a job vacancy is defined as “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.” (EU regulation 453/2008)
2 General information about the site search market can be found in Eurostat, 2014, p. 36 ff. of Annex D2
3 See http://www.online-recruiting.net/was-ist-eine-online-jobboerse/ (accessed 25 May 2016).
4 See http://www.monster.com/about/our-company
5 See http://www.stepstone.com/about-stepstone/ Stepstone equally co-founded the job portal network “The Network”, a cooparation of 55 career websites in all continents (see http://www.the-network.com/job-board/member-job-boards/all-members/).
6 The complete name of slice ”Hantverksyrken Kropps- och skönhetsvård Kultur …” is ” Hantverksyrken Kropps- och skönhetsvård Kultur, media, design Militärt arbete Naturbruk Naturvetenskapligt arbete Säkerhetsarbete 4%". The slice “Null” represents the advertisements missing their professional names and id’s.