Part-timer "Mary" writes: "Due to the nature of my work, the company wants me to come into the office only when they know they have work for me. This is two to three days a week, and not fixed according to any specific day.

"Therefore, when I leave work, I have to ask my boss when he wants me to come in next. Sometimes, he tells me orally on the spot, and sometimes he sends me an email asking if I can come in the next day. The other day, he asked me to come into the office on the very same day, and I felt very stressed. I would like to know what my rights are and what I could say to the company."

First of all, it's important to note that worker-related laws apply equally to part-time and full-time employees, according to Article 9 of the Labor Standards Act and Article 2 of the Labor Contract Act.