access is not provided by legal provisions in force tenderers from the UK could be rejected from the  procurement procedure.  Please note that any attempt by a tenderer to obtain confidential information, enter into unlawful  agreements with competitors or influence the evaluation committee or ECDC during the process of  examining, clarifying, evaluating and comparing tenders will lead to the rejection of his tender and may  result in administrative penalties. The tenderer should take note of the provisions of the draft contract (see section 4. Annexes) which  specifies the rights and obligations of the contractor, particularly those on payments, performance of the  contract, confidentiality, intellectual property rights and checks and audits. 1.1.1 Contractual conditions ECDC wishes to conclude a framework contract for scientific support to data analysis and coordination  activities of the European Surveillance of Antimicrobial Consumption Network (ESAC-Net) and the analysis  of antimicrobial consumption data for an initial period of 12 months, renewable automatically up to three  times for 12 months each. The framework contract will establish the terms governing specific contracts to  be awarded during a given period; in particular, with regard to specific deliverables and price.  Signature of the framework contract imposes no obligation on ECDC to order services. Only the  implementation of the framework contract through specific contracts/order forms is binding for ECDC.  It is estimated that the first specific contract will be signed in the third quarter of 2021.  Each specific contract/order form will contain details of deliverables and timelines for particular services  to be provided. When specific contracts are of a duration different than 12 months, the value of services ordered shall be  calculated on a pro-rata basis with respect to the duration and based on the financial offer of 12 months,  see Annex II Financial Tender.  The tender must comply with applicable environmental, social and labour law obligations established by  Union law, national legislation, collective agreements or the international environmental, social and labour  conventions listed in Annex X to Directive 2014/24/EU 1 . 1.2 Compliance with applicable law  1.3 Joint tenders  A joint tender (such as a consortium) is a situation where a tender is submitted by a group of economic  operators (natural or legal persons). Joint tenders may include subcontractors in addition to the members  of the group. In case of joint tender, all members of the group assume joint and several liability towards ECDC for the  performance of the contract as a whole, i.e. both financial and operational liability. Nevertheless,  tenderers must designate one of the economic operators as a single point of contact (the leader) for ECDC  for administrative and financial aspects as well as operational management of the contract.  1 Directive 2014/24/EU of the European Parliament and of the Council of 26 February 2014 on public procurement and  repealing Directive 2004/18/EC (OJ L 94, 28.3.2014, p. 65).  4 