The Colombian State in order to execute the aims of the nation hired public employees who are official workers and public servants, these State officials have not been sufficient for the effective deployment of all Activities that are at the head of the Nation, therefore it has been required of additional staff to support the activities to be developed. These are State contractors, who provide a service, but do not enjoy the rights and benefits that public employees acquire, as their functions are supportive. Throughout Colombian history the State Council has been changing the perspective of the service delivery contract recognizing different rights and guarantees to these contractors, likewise has set a jurisprudential line that has allowed To have clarity in front of the subject.