The practice of maintaining the Form 15 for leave records is applicable to the commercials covered under factories act 1948. Your current company CA/legal firm is covered under shops and commercial establishment act. Although there is no harm in maintaining the records in Form 15 however I would recommend you to refer to your state's applicable shops and commercial establishment act for a readily reference if in case there is a different format is prescribed, then it can be maintained.
2nd December 2017 From India, New Delhi
#AnonymousThanks Harpreet walia for resolve my query.
28th December 2017 From India, Faridabad