Birth Motif--Labor

In class we had come across the discussion of the similarities between a Pregnant mother going through labor vs. Dr. Frankenstien going through Labor in creating the monster. Why did the author just say "tedious work"..why use the word labor? Was this done on purpose? In my opinion, it was, and she was comparing the creation of Frankenstein to the creation of a child.

We had some disagreements in class about this topic. What would be another reason for her to use this word, is it just a coincidence?