Completely revised and enhanced for the new 2007 exams, this book enables you to validate your experience and skills as an HR professional with the industry-standard PHR (Professional in Human Resources) or SPHR (Senior Professional in Human Resources) certifications from the Human Resource Certification Institute (HRCI). This comprehensive new edition of the top-selling PHR/SPHR Study Guide provides you expert preparation and review for these challenging exams as well as comprehensive coverage on labor relations, workforce planning, compensation, OSHA regulations.