The public Service Commission is a body created by the Constitution of India. The provisions relating to the Union Public Service Commission at the Centre and other State public Service Commissions have been laid down in Chapter II of part XIV of the Constitution.

The provisions in the Constitution ensure the competence of the Commission to deal with the matters relating to the services and enable them to discharge their duties in a fair and impartial manner, free from influence from any quarter. The Chairman and Members of the Commission are appointed by the Governor of the State. The composition of the Commission is such that as nearly as one half of the members of it shall be persons who on the date of their appointment have at least 10 years of service under the Government. The Chairman or any other Member of the Commission can hold office for a period of six years or till he or she attains the age of 62 years whichever is earlier. On expiry of the term, the Chairman or any other Member is ineligible for re-appointment under the Central or the State Government. But the Chairman of the Commission may be appointed as the Chairman or Member of the Union Public Service Commission or the Chairman of another Public Service Commission for another term. A Member of the Commission may be appointed as the Chairman of the Commission or as the Member of the Union Public Service Commission for another term. The Chairman or any other Member of the Commission can be removed from office only by the President of India in accordance with the procedure laid down in the Constitution. The conditions of service of the Chairman or a Member once appointed cannot be varied to his disadvantage. The expenses connected with the Public Service Commission are not voted but are charged on the Consolidated Fund of State.

The duties and functions of the Commission have been laid down in Art, 320 of the Constitution and they are:

A) To make recruitment to various posts under

i) The Services of the State
ii) The Kerala State Electricity Board
iii) The Kerala State Road Transport Corporation
iv) The Local Authorities
v) The Co-operative Sector and
vi) Various other companies and Corporation

B) To render advice on all matters relating to

i) The methods of recruitment to Civil Services posts;
ii) The principles to be followed in making appointments to Civil Services and posts and in making promotions and transfers from one service to another and in the suitability of candidates for such appointments, promotions, transfers.
iii) The all disciplinary matters affecting a person serving under the Government in Civil Capacity
iv) On any claim in respect of the cost incurred in defending legal proceedings relating to the acts in the execution of duty, to be paid put of the consolidated fund of the state.
v) On any claim for the award of pension in respect of injuries sustained by a person while serving under the Government, in a Civil Capacity and any question as to the amount of any such award.

Under the proviso to Article 320 (3) of the Constitution of India, the Governor of Kerala has made the Kerala Public Service Commission (Consultation) Regulations, 1957 specifying the matters in which it shall not be necessary for the Commission to be consulted.
The Governor has also made under Article 318 of the Constitution, Regulations to determine the number of Members of the Commission and their conditions of service and to make provisions with respect to the number of members on the staff of the Commission and their conditions of Service. These regulations are called Kerala Public Service Commission (Composition and Conditions of Service of Members and Staff) Regulations, 1957.