Did his Mother die? If so, remind him that your mother can only die once on the same job
.
Just say: don't be late without calling to tell me/us. Realize that other people are depending on your being here. (You are important to us -- why are we unimportant to you?)
Fire him if he is late again without calling you -- you warned him once ...
** I didn?t see the 15 min part -- shit happens but if it repeatedly happens it shows a lack of discipline and will only get worse
