Male employee consistently late by 5-10 minutes nearly everyday. The excuse is about getting the children ready for school etc...he has 4 children between 1 and 9 years so I understand this is probably very hectic however his wife doesn't work, never has, and is a stay at home mum and does the school run etc normally. Other employees have commented as everyone else manages to get here on time. Myself and other manager have mentioned this to the employee however he really doesn't seem to care. Not sure if we are being unreasonable by giving written warning etc but we have tried to be understanding of the situation. Any advice or past experience in similar situations?