The Jim Crow laws had negative effects on the economic and financial lifestyle of any colored human.
One example of this is that labeled contracts had to be negotiated at the beginning of every year.
It was illegal to draw workers from another state
It was illegal to be out of work
Whoever broke the law or could not pay fines were sent to chain gangs
All of these rules were put in place to limit the options that black workers had. It limited the work they could do and how much work they could do. It basically got African Americans into legalized slavery.
African Americans could not apply to many different types of jobs. Even then the only jobs they could do were unsafe and not healthy. To make matters worse then it was extremely difficult for them to reach the job because they were limited to transportation limitations. This made it difficult to colored people to have stable jobs and to support there family.
Many government assistance programs were not made available to African Americans. These laws prevented them from obtaining financial aid from the government but that was available to whites, and it greatly limited there ability to by a home or even start a business and make money. This limited there economic growth as it did not allow them to move forward or go ahead. It kept them independent on whatever the whites decided for them