There are at least two major ways that diversity has been impacting organizations.
First, diversity brings a greater range of ideas and insights to firms. Firms with diverse workforces have more kinds of people to draw on instead of drawing on a more homogeneous group with less diversity of thought and opinion.
Second, diversity brings challenges to workplaces. Firms have to be aware of the possibility of conflict and misunderstanding between different groups. This brings about, for example, the need for much more training to help avoid things like sexual harassment or cultural insensitivity.
Diversity of workers impacts business organizations on a variety of levels. For example, if you have workers who are basically from other country, at that time communication is difficult because language deference of both parties. You may also face some other issues like staffing for holidays that are not commonly shared, etc.