1. The job was too difficult or required too much responsibility.
2. The job was not what I expected it to be.
3. I didn’t get along with my boss or co-workers.
4. I was bored with the work.
5. I was underpaid.
6. I was overworked.
7. The company was going through tough times and I was worried about being laid off.
8. I was offered a better job.
9. I wanted to change careers.
10. I was moving to a new city.