Hello Kumar,
Take a look to the S_PROGRAM authorization object in this URL:
http://help.sap.com/saphelp_40b/helpdata/en/1a/174b6e5733d1118b3f0060b03ca329/content.htm
You can use this authorization object in order to restrict the program that the user can release as a background job. For example, if your job is named as Z00001 and the program which is executed in the step of the job is called as Z00001 you can use the following values for the authorization object:
P_ACTION = BTCSUBMIT (allows to schedule the program as a background job).
P_GROUP = Z00001
Best regards.