1. The office that/which works is hiring computer technicians now.
2. We won't be reading applications of people who miss the deadline.
3. The day on which I had my interview began badly because I overslept.
4. My uncle, who is a journalist, is famous.
5. The position for which you applied has been filled.
6. Graphologists, whose job is to analyze handwriting, sometimes assess job candidates.
7. The person to whom I was talking is the boss.
5. Defining relative clause: The book that I borrowed from the library was very interesting.
Non-defining relative clause: My brother, who is an engineer, lives in San Francisco.