N.J. Stat. Ann. § 44:1-11

The welfare board shall be composed of not less than five nor more than seven citizens of the county or municipalities participating, at least two of whom shall be women, to be appointed by the board of chosen freeholders, who, with two designated members of the board of chosen freeholders and the county adjuster, when not serving as superintendent of welfare, as ex-officio members, shall constitute the county welfare board and managers of the welfare-house. The holding of any other office by a member of the welfare board shall not constitute such holding as incompatible with his office as member of the welfare board.