72 Pa. Stat. § 5452.3
The board shall appoint to serve at its pleasure, such number of subordinate and special assessors and such number of clerks, stenographers and other employes as the board shall deem requisite. The salaries or compensation of all employes of the board shall be fixed by the salary board of the county and together with the salaries of the members of the board, shall be paid out of the county treasury. When acting on the salary or compensation of any employe of the board, the chairman of the board shall sit as a member of the salary board. All persons appointed by the board shall be qualified according to standards, not inconsistent with the provisions of this act, adopted by the board and pursuant to such oral and written examinations as the board shall prescribe.
The board shall by majority vote reject any proposed employes who in the opinion of the board are not qualified according to the standards and provisions of this act, and pursuant to such oral or written examinations as the board shall prescribe. The board shall by majority vote promote, demote or discharge any employes in the department who, in the opinion of the majority of the board, are deserving of such promotion, demotion or discharge. No member of the Board of Property Assessment, Appeals and Review shall be permitted to hold any political office.
72 P.S. § 5452.3