After investigate with Khun Phumeth he was explain that during that time BDF has a lot of pending job such as amend L/C, amend invoice because the policy of company merger. Another job are printing documents/ job filing / preparing billing doc.
He has a problem of printing due to a big lot can’t print during working hour. Always getting struck with another colleage and make them trouble to located.
I did asking him to minimize O.T. by strick to the company policy. He should asking for approval before and should avoid weekend which x 3 times calculation. This should not happen again and if necessary to come. He must get an approval from me first.
Please co-ordinate with HR and closely monitor. Any help please let me known.