It depends on the type of business. Some create copyrightable works, some need to license the use of others' work, and some serve as the middleman between owners and users.
Everything written or recorded since 1923 is affected by copyright laws.
Typically, the documents will be "original" enough to be protected by copyright automatically.
Development of automobiles was affected more by patent than copyright.
The smurfs ate my mother in law
For the most part, the average paramedic is not going to be affected by copyright in his work. A general understanding of copyright is more or less required to be a member of society these days, however.
banter
Copying other businesses' Web information for commercial use is also in violation of copyright law.
They need a license because it helps them to copy information or publications that are copyright protected such as books articles... so fourth. YA MON!
The Internet has allowed small businesses to popup all across the internet. The Internet has made it affordable for individuals to start businesses.
Various types of media both use content by others and create content themselves, so they are affected by copyright law on both sides of the equation.
As creators, copyright allows us to ascribe value to and make money from our hard work. As users, copyright requires us to get permission to do a lot of the things we want, but also increases the variety of materials available to us by encouraging creation.
Everyone who creates or uses materials such as literary works, music, fine arts, photography, movies, or architecture. Copyright affects what you can do with this sentence you're reading right now.