Successful Models of Business People Serving the Nations

What are successful models to serve a nation with business workers?

Serving as an employee, one-of-the-guys, building relationships as an important part of being on the scene.

Serving as a business leader and holding Bible studies where colleagues are gracefully invited.

Mentoring with one-on-one relationships either in-country, or long distance returning one or more times a year.

What successful models have you observed?