Section 80. The salaries of the first assistant clerks of the district court divisions as designated pursuant to section ten shall be eighty-three and one-half percent of the salaries of the clerks of said divisions as provided for in section seventy-nine and shall be paid, subject to appropriation, by the commonwealth. The salaries of the assistant clerks of the district court divisions shall be seventy-seven percent of the salaries of the clerks of said divisions as provided for in section seventy-nine, and shall be paid, subject to appropriation, by the commonwealth.

The assistant clerks of the district court department shall devote their entire time during ordinary business hours to their respective duties and shall not, directly or indirectly, engage in the practice of law.

The assistant clerks of the district court department appointed to said position prior to January first, nineteen hundred and eighty-seven and serving continuously thereafter shall be entitled to thirty days vacation and thirty days sick leave in each calendar year. Any such clerk may accumulate vacation and sick leave not used in any such year; provided, however, that the number of vacation days so accumulated shall not exceed sixty and total amount of sick leave shall not exceed one hundred and eighty days; and provided, further, that no additional sick days shall be accumulated after said January first except in accordance with the policies and procedures established by the court administrator pursuant to section eight of chapter two hundred and eleven B. All other assistant clerks of said department shall be entitled to vacation leave and sick leave in accordance with the policies and procedures established by the court administrator pursuant to said section eight.