Jackie Nickerson has recently published a book titled "Terrain". In it, she depicts laborers on South and East African farms. 
Rather than being straightforward depictions of these people at work, she shows them with the materials of their labor obstructing, at minimum, their faces, and sometimes most of their bodies.
This has the effect of transforming both how we view the workers, as well as the work they do.
These photographs are great examples of how straightforward photographs can be invested with many layers of meaning.