9 are Matric/Higher Secondary and have passed Certificate Course in Library Science. They were employed as Assistant Librarians in the Department of Education, Himachal Pradesh and are governed by the Rules known as ‘The Himachal Pradesh Education Department Class-III (Technical) Service (Recruitment, Promotion and Certain Conditions of Service) Rules, 1971’. It has specifically been averred that there is only one cadre of Assistant Librarians both in the Schools, Colleges as also in the Public Libraries which are being maintained by the Education Department. The respondent No.2, the Director of Education vide Office Order dated July 7, 1981 ordered that the senior-most Assistant Librarians will get the pay scale of Rs. 300-600 from the date shown against each official. In most of the cases the revised pay scale is granted with effect from November 1, 1966 and in other cases the pay scale has been granted subsequently as mentioned in the said order. The further case of the applicants in nutshell is that they were also doing the same job and were qualified to hold the aforesaid posts and the higher grade has been given only to a few persons after relaxing the Rules and that non-grant of the revised pay scale of Rs. 300-600 to the applicants is illegal and void.