Ministry of Labour replied negatively to the question no. 10/2014, with which it has been required if the staff performing the activity of inbound/outbound call center may be hired with the so called “job on call” contract, regardless from personal data and objectives requirements. The Ministry specified that, from one hand, the activity of the private telephone switchboard operators consists in the sorting of the calls exclusively, while, from the other hand, the activity carried out by the call center operators is more well-structured because it is included within a service or a promotional activity or a purchase by the company.