The constitution gives the legislature the power to make the laws. And they made laws over it's employees.
PL 95-454 (S 2640) OCTOBER 13, 1978 An Act to reform the civil service laws.
www.eeoc.gov
Section 4302.
Establishment of performance appraisal systems
"(a) Each agency shall develop one or more performance appraisal systems which --,
"(1) provide for periodic appraisals of job performance of employees;
"(2) encourage employee participation in establishing performance standards; and
"(3) use the results of performance appraisals as a basis for training, rewarding, reassigning, promoting, reducing in grade, retaining, and removing employees;