It would be pertinent to mention, that Librarian were equated with Lecturers, for the grant of the pay scale of Rs.700-1600. The above pay parity would extend to Librarians, subject to the condition that they possessed the prescribed minimum educational qualification (first or second class MA, MSc, MCom plus a first or second class BLib Science or a diploma in Library Science, the degree of MLib Science being a perferential qualification). For those Librarians appointed prior to 3.12.1972, the educational qualifications were relaxed. In Sahib Ram case, a mistake was committed by wrongly extending to the appellants the revised pay scale, by relaxing the prescribed educational qualification, even though the appellants concerned were ineligible for the higher scale, by applying the principles of "equal pay for equal work". This Court, in the above circumstances, did not allow the recovery of the excess payment. This was apparently done because this Court felt that the employees were entitled to wages, for the post against which they had discharged their duties. In the above view of the matter, we are of the opinion, that it would be iniquitous and arbitrary for an employer to require an employee to refund the wages of a higher post, against which he ad wrongfully been permitted to work, though he should have rightfully been required to work against an inferior post.