Section 22(1) in The U.P. Basic Education (Teachers) Service Rules, 1981
(1)The seniority of a teacher in a cadre shall be determined by the date of his appointment in a substantive capacity :Provided that, if two or more persons are appointed on the same date their seniority shall be determined in which their names appear in the list referred to in Rule 17 or 17-A or 18, as the case may be.Note. - A candidate selected by direct recruitment may lose his seniority, if he fails to join without valid reasons when a vacancy is offered to him whether the reasons in any particular case are valid or not shall be decided by the appointing authority.]
