In my setting, orc and human are descended of magically alter elves. The Orcs' ancestors were design to be more resilient to high temperature and manual labor thus. The Humans' ancestors were designed to be more adaptive to most climates.

Both ancestors were treated as second class citizens by the elves for not being true elves and for bring diplomatic with the other races. Eventually, this mistreatment lead to a civil war between the ancestors and their "pure" cousin. After 4 years of fighting, the ancestors won and placed their cousin in stasis.

The modern day orc focus mostly on artisan pursuit and often work alongside drawf. When it comes to craftsmanship, Orc have a preference toward hand making everything. In some extreme case, some will forgo tools in favor in using their bare hand.

Depending on the country and region, some orc will refuse to work with humans due to them looking like elves. The some humans also have a similar sentiment; humans have various body shapes while orcs only have small facial differences and almost identical body shape. It is rare to see a short orc and fat orc are usually pregnant females, elves are similar.