Railway Recruitment Board (RRB) is recruiting for largest civil employer i.e. Indian Railways, for Group C and D staff. There are 20 railway boards in Indian Railways. Approximate 1.36 million employees are appointed to serve railway in India. Recruitment for Group C and D are done by these 20 railway boards for different zones and these zones are headed by respective General Manager. RRRB board is controlled by Railway Recruitment Control Board (RRCB) under Ministry of Railways. An experiment for the institution of service commission was first time experimented in 1942, this service commission was established with a chairman and two members who recruit the subordinate staff for north-west railway. Later on this experiment was done for Bombay (Mumbai), Calcutta (Kolkata), Madras (Chennai), and later on in Luckow. All these service commissions started recruiting staff for Class-III, advice to GM for dealing with different demands and appeal of Jobs In RRB Till 1985 all established service commissions started workings in full fledge.

All railway service commissions were rechristened to RRBs by January 1985, and consequently all these RRBs turned about to be 19 railway board in Indian Railway. In 1998, the Ministry of Railway was established the RRCB with the aim to set the recruitment procedures and to formulate the policies, to monitor all activities of all RRBs, to check and evaluate the performance of railway boards, to organise and manage information system to check if all work is done in proper way and through proper channel. Here is some railway recruitment boards named:

RRB Muzaffarpur, RRB Chandigarh, RRB Mumbai, RRB Patna, RRB Secunderabad, RRB Kolkata, RRB Guwahati, RRB Gorakhapur, RRB Chennai, RRB Ahmadabad, RRB Bangalore, RRB Bhopal, RRB Thiruvananthapuram, RRB Bilaspur, RRB Ajmer, RRB Hajipur, RRB Malda, RRB Jammu & Kashmir, RRB Allahabad, RRB Bhubaneswar.

There is an employment newspaper called (RozgarSamachar) through which RRB gives advertisement and call for eligible candidates for the available positions. RozgarSamachar is a publication of Government of India. This information is also published on website and available online. After receiving the applications, Railway Recruitment Boards analyses and scrutinizes the candidate profile and education and matches the same with the requirement for the available position. Call letters for the information of written test/examination are sent in advance to all those candidates who are eligible for the position.