(1) Magistrates shall be paid by the county in districts of the first and second class and by the district control unit or units in districts of the third class on a salary or per diem basis as determined by the county board of commissioners in districts of the first and second class or by the governing bodies of the district control unit or units in districts of the third class except that in no case shall the salary of the magistrate be less than $5,000.00 per year if paid a salary or less than $20.00 per day and $10.00 per half day if paid per diem. Uniformity in compensation of magistrates within a county in a district of the first class or within a district of the second class is not essential. Where a magistrate is paid on a per diem basis, the presiding judge of the district shall certify the number of days and half days which the magistrate worked in a pay period.

    (2) The salaries of all magistrates appointed to serve in the thirty-sixth district shall be uniform.