Old PHR Study Guide? How the 2018 Five-Area Outline Maps to the 2024 Seven Areas

Used PHR books are cheap and plentiful, and many of them teach an outline the exam no longer uses. HRCI's PHR page, as archived on February 25, 2024, said exams taken from March 1, 2024 onward would follow the new outline. Most of an older book's content is still examinable; what changed is where it sits, how much it weighs, and a few things the old outline never had.

How to tell whether your PHR book uses the old outline

Any one of these signs means the book was written for the 2018 outline or earlier:

• Five functional areas instead of seven
• Employee and Labor Relations at 39% of the exam
• "Talent Planning and Acquisition" as an area name
• Numbered "Knowledge of" statements, 01 to 57, after each area's responsibilities
• 150 scored plus 25 pretest questions in 3 hours, the earlier format that HRCI's PHR page still listed, under the 2018 outline, in January 2021

A book that has seven areas, including Employee Engagement and HR Information Management, and describes 90 scored plus 25 pretest questions in 2 hours matches the current exam.

What changed in the PHR outline on March 1, 2024

HRCI's 2024 explainer adds context. It names Employee Engagement and HR Information Management as the two new PHR areas, says the PHR and PHRi now share the same area names and weights, says diversity, equity and inclusion concepts were integrated into several task statements, and says "the difficulty of the exams remains the same." Written before the switch, it also said candidates could prepare from either the "2023" or the 2024 outline. The "2023" outline is the one this guide calls 2018: HRCI's PDF of it says it took effect in 2018, and its file name says 2023. Since March 1, 2024, the exam itself has followed the 2024 outline, and HRCI's PHR page now links only that one.

A useful way to read the table, which is Passy's observation: Employee Engagement plus the new Employee and Labor Relations come to 37%, close to the old 39%. Most of the old giant area was split in two rather than cut.

The PHR outline crosswalk, area by area

These tables match each 2018 responsibility to the 2024 responsibility whose wording is closest. The matches are Passy's reading of HRCI's two outlines, not an HRCI document. Numbers are the outline's own.

Business Management (2018: 20%, 2024: 14%)

Talent Planning and Acquisition to Workforce Planning and Talent Acquisition (16% to 14%)

Learning and Development (10% in both)

Total Rewards (15% in both)

The old Employee and Labor Relations (39%) and where it went

HR Information Management (new, 10%)

There was no 2018 counterpart. The closest 2018 content sat in knowledge statements: HRIS and reporting tools under Business Management, applicant tracking under Talent Planning and Acquisition, and recordkeeping and data security and privacy under Employee and Labor Relations. The guide to Learning and Development and HR Information Management covers responsibilities 7.1 to 7.3.

If you'd rather practice from material already sorted this way, planned PHR prep is organized by the 2024 outline's seven areas, not the five of 2018.

What the 2024 PHR outline no longer prints

The 2018 outline listed 57 numbered knowledge statements across its five areas, among them "Adult learning processes" and "Termination approaches, concepts, and terms." The 2024 outline prints only responsibilities and "for example" lists. That doesn't mean the knowledge stopped mattering: you can't evaluate a training program or run an investigation without it. Keep the old list as a checklist of concepts, but let the 2024 responsibilities decide what you study and how much.

Re-filing an older PHR book in one afternoon

1. Make seven tabs, one per current area, weighted as in the table above.
2. Move each chapter to the area its 2018 responsibility maps to.
3. Split the employee relations chapter. Lifecycle, engagement data, performance management and separations go to Employee Engagement. Culture goes to Business Management. The rest stays in Employee and Labor Relations.
4. Collect the HR Information Management pieces scattered through the book (HRIS, reporting, recordkeeping, data security) into their own tab, and note what's missing.
5. Replace the law sections. HRCI tests the laws in effect on your exam date, so a book's legal figures need checking against the enforcing agency's current pages, with the date you checked.
6. Re-budget your weeks by the 2024 weights. The PHR study guide turns them into an 8-, 12- or 16-week plan.

Is an older PHR book still worth using?

For concepts, usually yes. The ideas behind most responsibilities are the same, and the examples HRCI added are mostly extensions. Where an older book falls short is predictable: it gives employee relations almost twice today's weight, it has little or nothing on HR information management, administering compliance and safety training (3.3), engagement programs such as focus groups and action plans from feedback (5.2), or the newer Business Management examples, and its law and format details may be out of date. Fill those gaps from the current outline and official sources, and treat the book as one resource among several, which is what HRCI advises anyway. For practice volume in the two new areas, planned PHR prep sets out 314 Employee Engagement and 185 HR Information Management questions.

The two new areas deserve the most attention, since an older book can't teach them as areas at all. The guide to PHR Employee Engagement covers the 17% one.

Will the PHR outline change again?

Eventually, but not without warning. HRCI's exam development page says its outlines come from practice analysis studies run every few years, that its Certification Council must approve any new or revised outline before it takes effect, and that HRCI gives "several months of advance notice" of changes. As of October 27, 2026, HRCI's PHR page announces no new outline, so a candidate testing in 2027 should study the 2024 one unless that page says otherwise.

Your next step with an older PHR book

Spend an hour with the crosswalk tables and your book's table of contents, then rebuild your schedule with the free PHR study planner. When you review, the 440 flashcards planned for PHR prep are split across all seven current areas, so none of the new material gets left out; checkout isn't open yet.