We are looking to hire a part time person in our office to help out. Its possible they may only be need 2, 3 or 4 hours a day. We need to make sure that there isn't a law that states there is a minimum amount of hours the employer has to pay for a part time office position.
There's no minimum hours requirement, but a host of other laws and rules you'll need to know about and observe, such as withholding and workers' comp. I'd suggest that as a new employer you should obtain basic informational pamphlets from the state and federal government agencies concerned with employment and tax-collection issues.