The wording for that right in the first two paragraphs results from the caselaw (Court of Justice judgment of 15 October 1987 in Case 222/86 Heylens [1987] ECR 4097, paragraph 15 of the grounds, judgment of 18 October 1989 in Case 374/87 Orkem [1989] ECR 3283, judgment of 21 November 1991 in Case C-269/90 TU München [1991] ECR I-5469, and Court of First Instance judgments of 6 December 1994 in Case T450/93 Lisrestal [1994] ECR II-1177, 18 September 1995 in Case T-167/94 Nölle [1995] ECR II-258) and the wording regarding the obligation to give reasons comes from Article 253 of the EC Treaty, now replaced by Article I-38(2) of the Constitution (see also the legal base in Article III-398 of the Constitution for the adoption of legislation in the interest of an open, efficient and independent European administration).
Is ón gcásdlí a eascraíonn an fhoclaíocht atá ar an gceart sin sa chéad dá mhír (breithiúnas na Cúirte Breithiúnais an 15 Deireadh Fómhair 1987, i gCás 222/86 Heylens [1987] ECR 4097, mír 15 de na forais, breithiúnas an 18 Deireadh Fómhair 1989 i gCás 374/87 Orkem [1989] ECR 3283, breithiúnas an 21 Samhain 1991 i gCás C 269 / 90 , TU München [1991] ECR I 54 6 9, agus breithiúnais na Cúirte Céadchéime an 6 Nollaig 1994 i gCás T 450 / 9 3, Lisrestal [1994] ECR, II 1 177 an 18 Meán Fómhair 1995 i gCás T 167 / 94 Nölle [1995] ECR II 258 ) agus is as Airteagal 253 de Chonradh CE, a bhfuil Airteagal I 38 (2) den Bhunreacht curtha ina ionad anois, a thagann an fhoclaíocht maidir leis an oibleagáid réasúin a lua (féach freisin an bonn dlíthiúil in Airteagal III 398 den Bhunreacht chun reachtaíochta ghlacadh ar mhaithe le riarachán Eorpach atá oscailte, éifeachtach, neamhspleách).