While granting to the Employee marks for seniority, a maximum of thirty marks shall be granted at the following rate for having served in the following class that he or she is holding at present.
(a) At the rate of 3.75 marks for each year for having served in the non-gazetted third and second class posts,
(b) At the rate of 3 marks for each year for having served in the non-gazetted first class post,
(c) At the rate of 2.5 marks for each year for having served in the gazetted third and second class posts.
Provided, however, that-
(1) While calculating marks for seniority, marks shall be calculated on a proportional basis for a period of more than one year by a few months or days.
(2) For purposes of this Section, no marks shall be granted for the period of absence or extra-ordinary leave undergone.