The county may establish and prescribe for all employees of the county the following provisions applicable to such employees:

1. 1. Normal workdays and hours of employment therein;
2. 2. Holidays;
3. 3. Days of vacation allowed;
4. 4. Days of sick leave allowed;
5. 5. Other provisions concerning the hours and conditions of employment;

6. 6. Plans of personnel management and control.

   The county may establish, alter, amend or repeal at will any provision adopted under this section.

Code 1950, § 15-334.1; 1952, c. 246; 1962, c. 623, § 15.1-658; 1997, c. 587.