Dear member,
Your HR Head is correct. Matters regarding discipline or indiscipline are to be handled by the HR Department only. In the administration of the company, this independent check is introduced. If the power of discipline is also delegated to the functional heads, then they may start enjoying untrammeled powers.
The HR Department is a central repository of employee records. While HODs may change their job, the central records of the HR department remain intact.
Nevertheless, in many companies, the functional heads keep a warning register. The first fault or a non-compliance of a minor nature is recorded in the register. However, if the employee commits more defaults or if it is a major non-compliance, the matter is referred to the HR Department.
You may send a letter to the HR Head enumerating the nature of non-compliance by the employee. Please focus on the incident rather than the person. Write clearly what happened, when it happened, which clause of the SOP or policy was violated, when it was violated, what were the consequences of the violation, etc.
Thanks,
Dinesh Divekar