Deduction Of Wages For Late Comers

Hi,
As per our factory policy, 3 Late and 2 permissions are allowed for a month. If workers are exceeding this limit, how much should we deduct as per the payment of wages act 1936?
As per the factory policy, we have to deduct 1/2 day salary. But is it is legally correct?
We are following TN Model Standing order only.
Please clarify. Thanks in advance.

Hi,
Deducting 1/2 wages for half an hour late coming is not correct.
Regards

As per our standing order, we allow 100 mins late for every month.over 100 mins ie suppose it is 120 mins in a month,we deduct late of 200 mins from his basic wage.
please clerify,is it correct as per law.

In my opinion to maintain the work discipline half day dedication is justify but the fund will be use only employees welfare pirpose.
R K SINGH