a) Use of workers posted to the contractor by another company owned by the same group and established in a Member State (“intra-group posting” as defined by Article 1, 3, (b) of Directive 96/71/EC concerning the posting of workers in the framework of the provision of services). 

b) Use of workers hired out to the contractor by a temporary employment undertaking or placement agency established in a Member State (“hiring out of workers” as defined by Article 1, 3, (c) of Directive 96/71/EC concerning the posting of workers in the framework of the provision of services). 

c) Use of workers temporarily transferred to the contractor from an undertaking established outside the territory of a Member State and that belongs to the same group (“intra- corporate transfer” as defined by Article 3, (b) of Directive 2014/66/EU on the conditions of entry and residence of third-country nationals in the framework of an intra-corporate transfer) . 

d) Use of staff without employment contract (“self-employed persons working for the contractor”), without the tasks of the self-employed persons being particular well-defined parts of the contract. 

e) Use of suppliers and/or transporters by the contractor, in order to perform the contract at the place of performance, unless the economic activities of the suppliers and/or the transporting services are within the subject matter of the contract. 

f) Performance of part of the contract by members of an EEIG (European Economic Interest Grouping), when the EEIG is itself a contractor or a group member. 

The persons mentioned in points a), b), c) and d) above will be considered as “personnel” of the contractor as defined in the contract. 

All contractual tasks may be subcontracted unless the procurement documents expressly reserve the execution of certain critical tasks to the single tenderer itself, or in case of a joint tender, to a member of the group. 

In case of subcontracting the candidate/tenderer shall clearly state in the section of the request to participate /tender related to the eligibility and capacity: 

• which tasks it intends to subcontract and clearly indicate the roles, activities and responsibilities of the subcontractor(s), 

• the volume or proportion of the activities likely to be subcontracted. 

Changes concerning subcontractors identified in the tender (withdrawal/replacement of a subcontractor, additional subcontracting) during the procurement procedure (after the submission deadline and before contract signature) require the following verifications and the prior written approval of Europol: 

• any new subcontractor is not in an exclusion situation; 

• the tenderer still fulfils the selection criteria and the new subcontractor fulfils the selection criteria applicable to it individually, if any; 

• the terms of the originally submitted tender are not altered substantially, i.e. all the tasks assigned to the former subcontractor are taken over by another involved entity, the 

