This question was asked by FutureStep, the recruiting company for UPS. This question seemed awkward. I was told they were looking to fill all of the blanks between the last position/graduate degree on resume and the undergraduate school, not to discriminate due to age.
Honesty goes a long way. I simply told them I was very young when I had that position and did not fully understand the ramifications and importance for being to work on time and my tardies eventually tallied up enough occurrences to terminate me. Which is why I am always early to everything now. -He did make an effort to say he appreciated my timely arrival at the beginning of the interview.