Colo. Rev. Stat. § 25-1-106
The executive director of the department shall appoint the director of the division of administration, pursuant to the provisions of section 13 of article XII of the state constitution. Each subdivision (and section) of the division of administration shall be under the management of a head, and such heads and all other subordinate personnel of the division shall be appointed by the director of the division, subject to the constitution and state personnel system laws of the state, and shall possess qualifications approved by the board. All personnel shall receive such compensation as fixed by the executive director with the approval of the board, subject to the constitution and state personnel system laws of the state and within the limits of funds made available to the department by appropriation of the general assembly or otherwise. With the approval of the executive director, employees shall also be allowed traveling and subsistence expenses actually and necessarily incurred in the performance of their official duties when absent from their places of residence.
C.R.S. § 25-1-106
For the state personnel system, see article 50 of title 24.