• Collection of data from the employing establishments.
• Checking, Verification, coding of data.
• Entering data in the computer.
• Processing of data and preparation of reports.
• Sending the data to the respective Nodal Centres and the Lead Centre.

To achieve the above functions the nodal centre is headed by one Project Officer assisted by one C.O.C.P., one R.A., one P.A. and four Ad-hoc investigators.

 Normally it takes around one year to complete data collection and analysis of the data. The establishments are advised to send the information in the format prescribed by IAMR (copy of NTMIS establishment schedule and explanatory note enclosed).

After the first letter, establishments are reminded periodically by sending Reminder-I, Reminder-II, Reminder-III, A D.O. letter with the signature of the Director, BOAT is also sent to few establishments.

The list of defaulting establishments is also collected by personal visit by the Project Officer. Some local establishments are also visited by Ad-hoc investigators.