There are a particular set of divisions that deals with JCL.
1. Identification Division
Act as introductory part to JCL. It introduces program name, author, date, etc. no interacting code to JCL.
2. Environment Division
Environment division allows JCL to interact with OS. OS sends a request for Files under file operation.
3. Data Division
It works with the accessed file according to operations to READ or to PRINT files (with the help of OS).
4. Procedure Division
It contains various actions taken on files, e.g., to close files that are being used.
