California Code, Government Code - GOV § 14131

The department may contract for the services of engineers, architects, surveyors, planners, environmental specialists, and materials testing specialists to provide professional and technical services relating to project study reports, project development, surveying, and construction inspection whenever the director determines that the guidelines adopted pursuant to Section 14134 are applicable.  Services contracted for shall not cause the displacement of any permanent, temporary, or part-time employee of the department.

For purposes of this section, “displacement” means layoff, demotion, involuntary transfer to a new class, or involuntary transfer to a new work location requiring the employee to change his or her place of residence in order to be able to continue in his or her job classification.