Since the issues involved in these original petitions are the same, they were heard together and are being disposed of by a common judgment. Documents are referred as marked in O.P. 9545/91. Petitioners in O.P. Nos. 11982/90 and 9545/91 are teachers claiming appointment in the St. Thomas High School, Kanakkadavu, Kannur District and the Manager of the above school has filed O.P. 9200/91.

2. The short facts are as follows: Sri. UJ. Paius the petitioner in O.P. 9545/91 was originally appointed as a High School Assistant (Physical science) in St. Thomas High School in a leave vacancy during the period from 16-7-1987 to 28 -10-1987. His appointment was duly approved and he was relieved from the school on the termination of the vacancy. Later, on 1-6-1988, he obtained appointment as an Upper Primary School Assistant in a permanent vacancy in St. Mary's U.P. School under another educational agency. When temporary vacancies arose in St. Thomas High School in the post of H.S.A. (Physical science) during the period from 3-6-1988 to 22-8-1988 and from 5-9-1988 to 2-12-1988, petitioner in O.P. 11982/90, Smt.C. Jaimy was appointed by the Manager. These appointments were approved by