What are the tasks in SEO which should be outsourced? Though SEOs are commonly known to handle tasks such as research, creating of pages and discovery of links, not all of these tasks are needed to be outsourced.

The tasks which should be perfect candidate for outsourcing should be the ones which could make your job a little easier and also has a minimal risk. Some recommended tasks includes the following:
-market research which includes customer and competitor data
-keyword research
-general link building either from directories, easy topical links, etc

These tasks are ideal for outsourcing because you won't have to redo the work which they have done. Aside from that, these tasks could not directly harm your business unless of course, you monitor it.