(as much as possible, try “not” to be part of it; dirty money via unfair & biased practices is best avoided. Better to remain poor in integrity as the verse below means in principle too):

“Better is a poor man who walks in his integrity than a rich man who is crooked in his ways.” (Proverbs 28:6)

P/S:

Better to quit any such jobs & go for a lesser income honest living.