Needing help with Heart Of Darkness

An honest worker, in general, is one that works hard, doesn't cheat, is forthright....

"Honesty isn't really a big part of this story. This is a story about exploitation, the white men are there to use and abuse the Congo and the natives are turned into slaves.

Practically all the white Europeans are dishonest in some way.

Perhaps Marlow is your closest thing to honest in the story.