Why doesn’t Erik go to work? Why isn”t Erik going to work?

The structure is why + verb + n't + subject + rest of sentence. So why doesn't Erik go to work? Why isn't English an easy language? If you want to use the full form of the verb: Why + verb + subject + not + rest of sentence. So why does Erik not go to work? You CAN say "Why Erik does not go to work", but then it is no longer a question. Why Erik does not go to work is a mystery. Why Erik does not go to work: list of reasons why. In this case, you put a colon, not a question mark.

The second one is correct. You could also say "Why doesn't Erik go to work?" and be correct.

'Why Erik doesn't go to work' is incorrect because doesn't would go before Erik. Contracted negative verbs (can't, won't, doesn't, don't etc) are placed in the place the verb would be in the sentence not "not" Why can I not go? Why can't I go? Why does he not sing? Why doesn't he sing? Are we not going? Aren't we going?