Managed by the Secretariat-General of the Commission, PreLex monitors legislation as it goes through the legislative process involving the work of various groups and institutions. It provides access to preparatory documents, reports, press releases, proposals and final legislation.
OEIL does about the same thing as PreLex but from the European Parliament’sperspective. OEIL provides detailed “Procedure Files” on legislation that describe the content and purpose of the legislation.
The two services compliment each other; there is an advantage to examining both services. Both services provide links to final and preparatory documents. These services are similar to the bill tracking services you find on Westlaw and Lexis.
Its best to start with the Commission's Pre-Lex service. Once you have generated a report in Pre-Lex, there is a link in the report that will generate the OEIL report without having to do a new search. Under the STANDARD SEARCH, enter the preparatory document type (i.e COM or SEC), the document number and the date.
Access Pre-Lex
Access OEIL