Hi!

Human resources managers perform several duties like hiring and firing workers, training and development as well as benefits and compensation. They usually face different common issues.
These are:
*Medical issues - this is one of the most common issues faced by human resource and that is dealing with the shortage that can happen due to medical leave. There is the Family and Medical Leave Act that states that employees can receive up to 12 weeks of unpaid leave for certain medical reasons like pregnancy, adoption, care of an immediate family member or own medical conditions.

*Compensation is another common issue that HR department face. Issues may happen between HR departments and employees due to incorrect handling of the paperwork or when employees failed to properly complete the paperwork.

*Legal issue is another common concern. Regular issues like sexual harassment, racial discrimination, age discrimination and disability in the workplace.

Source:
http://www.ehow.com/list_7253639_common-hr-issues.html

Nancy Mobley's 2011 HR Outlook is helpful. I think most HR issues stem from a lack of communication or poor communication. An entrepreneur may struggle to share his or her vision and agenda with staff members; managers may not explain decisions effectively; and employees may not communicate their needs or challenges openly. All of these situations can stoke the simple misunderstandings that are at the heart of most HR problems.

http://www.inc.com/nancy-mobley/2011-human-resources-small-business-outlook_2.html

You can find human resource issue discussed on wisegeek.com as well as mftrou.com. Most business sites have a page or an article on employee issues so you might try going to your favorite site and type in the key words you are looking for. MSN has business related articles such as "How to manage 10 sticky situations at work" which covers dealing with employee romances, drunken help, religious zealots, as well as others.

You could also look at digital libraries that might have some business book resources. This way you can read the chapter in the business book you are interested in and not spend the money on the book.