Contractual agents of the establishment appointed to a post in a category or class higher than that to which they belonged or to a management post are classified at a step with an index equal to or, failing that, immediately higher than that which they held in their original category or class. Within the time limit set by the decision provided for in article R. 113-11 to reach the higher step in their new category or class, they shall retain the seniority of step acquired in their previous situation, when the increase in salary following their appointment is less than or equal to that which they would have received by advancing to a higher step in their previous category or class.
Employees appointed when they have reached the highest step in their original category shall retain their seniority in that step, subject to the same conditions and limits, when the increase in salary following their appointment is less than that resulting from advancement to the latter step.