FWC conditions of October 2018  Contract number: [ complete ]  collective agreements or by the international environmental, social and labour law  provisions listed in Annex X to Directive 2014/24/EU$^{2}$.  II.4.4  The contractor must obtain any permit or licence required in the State where the services  are to be provided.  II.4.5 All periods specified in the FWC are calculated in calendar days, unless otherwise  specified. II.4.6  The contractor must not present itself as a representative of the contracting authority  and must inform third parties that it is not part of the European public service.  II.4.7 The contractor is responsible for the  personnel  who carry out the services and exercises  its authority over its  personnel  without interference by the contracting authority. The  contractor must inform its  personnel  that:  (a) they may not accept any direct instructions from the contracting authority; and  (b) their participation in providing the services does not result in any employment or  contractual relationship with the contracting authority.  II.4.8  The contractor must ensure that the  personnel implementing the FWC and any future  replacement personnel possess the professional qualifications and experience required  to provide the services, as the case may be on the basis of the selection criteria set out  in the tender specifications.  II.4.9 At the contracting authority’s reasoned request, the contractor must replace any member  of  personnel  who:  (a) does not have the expertise required to provide the services; or  (b) has caused disruption at the premises of the contracting authority.  II.4.10  The contractor must record and report to the contracting authority any problem that  affects its ability to provide the services. The report must describe the problem, state  when it started and what action the contractor is taking to resolve it.  (a) be made in writing in paper or electronic format in the language of the contract; (b) bear the FWC number and, if applicable, the specific contract number;  (c) be made using the relevant communication details set out in Article I.8; and  $^{2}$  OJ L 94 of 28.03.2014, p. 65  15  Any communication of information, notices or documents under the FWC must:  The contractor bears the cost of replacing its  personnel  and is responsible for any delay  in providing the services resulting from the replacement of  personnel .  II.5.1. Form and means of communication  II.5. COMMUNICATION BETWEEN THE PARTIES 