Workforce Planning and Talent Acquisition carries 17% of the SPHR exam[1]. HRCI describes the area as forecasting organizational talent needs and developing strategies to attract and engage new talent[1]. At the senior level the work has two halves. The first is analytical: how many people, with which skills, will the business need, and how many will it already have? The second is legal and procedural: the hiring, screening, onboarding and separation steps that turn a forecast into real people are steps that federal law regulates closely.
HRCI holds candidates responsible for the laws and regulations in effect at the time of the exam[1]. Every federal figure in this chapter was read from the U.S. Code, the eCFR or an agency page between 2026-09-28 and 2026-09-30 and is cited to that source. Many states add stricter rules on layoff notice, background checks, criminal-history questions and pay history. This chapter flags where that happens and never tests it.
One rule about the numbers. Wherever a worked example uses invented headcounts, rates or dates, it is illustrative arithmetic written for this book. It carries no citation because it states no fact about the world. Every threshold, period and definition does carry one.
2.1 Evaluate and forecast organizational needs throughout business cycles to develop or revise workforce plans (for example: corporate restructuring, divestitures, workforce expansion, or reduction)
HRCI's wording is above[1]. Its verbs are evaluate and forecast, then develop or revise the plan. The examples all involve change in size or shape: restructuring, divestiture, expansion and reduction. The legal thread through this responsibility is what the law requires when the forecast says "smaller."
Two forecasts and a gap
Workforce planning rests on two forecasts. The first is the demand forecast: the number of people the organization needs at some future date, such as a year out. The second is the internal supply forecast: the number of people now employed who will still be available to fill jobs at that date[2]. Comparing the two tells you whether the organization faces a personnel surplus or a shortage[2].
Worked example (illustrative). A service center has 100 representatives. Volume projections put demand at 118 representatives next year. To get supply, start with the 100 and subtract the people you expect to lose from the role: 12 who will leave the company and 6 who will be promoted out, then add 3 transfers in. Internal supply is 100 − 12 − 6 + 3 = 85. The gap is 118 − 85 = 33, a shortage. The 33 is what recruiting, contingent labor, overtime or automation must cover. Notice that the supply forecast does not include people you plan to hire. If it did, the gap would be hidden.
The senior-level point is that a gap is a decision prompt, not an answer. A shortage can be closed by external hiring, by internal development, by changing the work, or by buying capability through an acquisition. A surplus can be closed by hiring freezes, attrition, redeployment, reduced hours or, last, reductions in force. Each of those has different legal exposure, which is why the rest of this responsibility follows the legal path.
Methods you must be able to name
The forecasting literature describes several approaches to estimating workforce needs. One systematic review of workforce projection studies identified seven statistical approaches in common use: arithmetic calculation, optimization, time-series analysis, econometric regression, microsimulation, cohort-based simulation and feedback causal loops[3]. The review comes from health workforce planning, and it is cited here for the names of the methods, not for any health-specific figure. You are not expected to run these models on the exam. You are expected to know which one is simple and which one is rich, and what each disregards.
- Ratio (provider-to-population) analysis estimates requirements as a proportion of some base[3]. In an HR setting the base might be revenue, units produced, customers served or headcount supervised. Illustration: if policy is one supervisor for every 12 staff and you forecast 118 staff, you need 118 ÷ 12 ≈ 9.8, so 10 supervisors. The method is simple and easy to use, but it disregards skills, distribution and specific needs[3]. A ratio does not know that the extra supervisors must speak a second language.
- Trend (time-series) analysis projects the past forward. Illustration: headcount of 90, 96 and 102 in three successive years grows by 6 a year, so next year's projection is 108. Its trap is obvious. It assumes the next year resembles the last, and a restructuring, divestiture or acquisition breaks that assumption.
- Econometric regression relates staffing needs to drivers such as sales or output. It fits best when you can find a driver that moves reliably with headcount[3].
- Stock-and-flow supply analysis is how supply-side work usually begins. It tracks the stock of workers and the flows in and out, using variables such as size, education, migration and attrition[3]. The reason to use it is that supply is never the current headcount. It is headcount after the flows.
The transition-matrix (Markov) idea
A Markov manpower model is a stock-and-flow model with probabilities. Its flows are recruitment, promotion, wastage and transfer[4]. The approach applies Markov chain theory to build models that represent the probabilistic patterns of aggregate behavior of the members of the system[4]. In the example below, "wastage" means people who leave the system.
The mechanics need no advanced mathematics. From history you estimate, for each job level, the share of people who stay, move up, move sideways or leave in a year. Those shares form a transition matrix. Multiply this year's headcount at each level by the matrix and you have next year's expected headcount at each level.
Worked example (illustrative). Two levels: 200 Analysts and 50 Seniors. History says that in a year 70% of Analysts stay, 10% are promoted to Senior and 20% leave. For Seniors, 80% stay and 20% leave. Next year's Seniors: 200 × 0.10 promoted in, plus 50 × 0.80 staying, equals 20 + 40 = 60. Next year's Analysts from the current workforce: 200 × 0.70 = 140. If the plan calls for 200 Analysts, recruitment must supply 60. The model also exposes something a headcount total hides: the Senior pool has 10 leavers (50 × 0.20) but receives 20 promotions, so it grows even though nobody was hired into it.
How this is tested: know that the model is probabilistic, that its four flows are recruitment, promotion, wastage and transfer, and that the probabilities come from history. The trap is treating the matrix as a prediction about individuals. It describes aggregate behavior, not what a particular employee will do.
Reading the business cycle
Business-cycle indicators help decide when to accelerate or slow a plan. The federal Job Openings and Labor Turnover Survey (JOLTS) is one source. It defines hires as all additions to the payroll during the month[5], quits as employees who left voluntarily[5], and layoffs and discharges as involuntary separations initiated by the employer[5]. A rising quit rate is commonly read as a sign of a tight labor market, in which your own attrition assumption may be too low. A rising layoff-and-discharge rate is commonly read as a sign of slack. Use the three components separately. Blending them hides the signal.
Restructuring and reduction: the WARN Act
When a forecast leads to a shutdown or large layoff, the Worker Adjustment and Retraining Notification (WARN) Act applies. The senior HR leader must be able to walk through five questions in order: is the employer covered, is the event a plant closing or a mass layoff, was there an employment loss, who gets notice and when, and does an exception or a sale-of-business rule change the answer?
Coverage. WARN covers an employer with 100 or more employees, excluding part-time employees, or 100 or more employees who in the aggregate work at least 4,000 hours per week, exclusive of overtime[6]. A part-time employee is one employed for an average of fewer than 20 hours per week, or employed for fewer than 6 of the 12 months before the date on which notice is required[6]. The trap is counting part-time employees toward the coverage and layoff thresholds.
Plant closing. A shutdown is a plant closing if it results in an employment loss at a single site of employment during any 30-day period for 50 or more employees, excluding part-time employees[6].
Mass layoff. A layoff that is not a closing is a mass layoff if, at a single site during any 30-day period, it reaches one of two tests. The first test needs both at least 33 percent of the employees and at least 50 employees. The second test is at least 500 employees. Part-time employees are excluded from both[6]. Illustration: at a site with 300 covered employees, a layoff of 40 is neither 33 percent nor 50 people. A layoff of 100 is 33.3 percent and more than 50, so it qualifies. The 500 test is the only route for a very large site, because 33 percent of a 3,000-person site is 990 people, far above 500.
Employment loss. Employment loss means an employment termination other than a discharge for cause, voluntary departure or retirement; a layoff exceeding 6 months; or a reduction in hours of work of more than 50 percent during each month of any 6-month period[6]. So a furlough that is short does not, by itself, count as a loss, but a long one does. An hours cut of more than half that lasts the whole 6-month window counts.
Aggregation. Employment losses for two or more groups at a single site, each below the minimum but in the aggregate above it within any 90-day period, are treated as a plant closing or mass layoff[7]. The employer avoids that result only by showing that the losses are the result of separate and distinct actions and causes and are not an attempt to evade the requirements of the Act[7]. This is the trap in "rolling layoffs." Splitting a single-site shutdown of 90 people into three waves of 30 within 90 days does not avoid the law when the waves are not separate in cause.
Notice. The employer may not order the closing or layoff until the end of a 60-day period after serving written notice[7]. The notice goes to each representative of the affected employees or, if there is none, to each affected employee[7]. It also goes to the State or the entity designated to carry out rapid response, and to the chief elected official of the unit of local government where the closing or layoff will occur[7]. Note the three audiences: employees or their representatives, the State, and local government.
Exceptions. The Act lets an employer shorten the notice period in two situations and excuses notice in a third. First, a faltering company: the employer may order the shutdown of a single site before the 60 days end if it was actively seeking capital or business that would have enabled it to avoid or postpone the shutdown, and it reasonably and in good faith believed that giving the notice would have precluded it from obtaining that capital or business[7]. Second, a plant closing or mass layoff caused by business circumstances that were not reasonably foreseeable when notice would have been required[7]. Third, a natural disaster, for which the statute says no notice is required[7]. The statute adds that an employer relying on this subsection must give as much notice as is practicable and, at that time, a brief statement of the basis for reducing the notification period[7]. The faltering-company exception reaches only the shutdown of a single site, not a mass layoff, and it needs both the active search for capital or business and the good-faith belief that notice would have defeated it. An employer that merely hopes to avoid a closing cannot skip or shorten notice on that theory.
Liability. Liability for failing to give notice is calculated for the period of the violation, up to a maximum of 60 days, but in no event for more than one-half the number of days the employee was employed by the employer[8]. Illustration: an employee who worked 40 days before the closing can recover for no more than 20 days, even if the notice violation lasted 60. A civil penalty of not more than $500 for each day of the violation applies only to an employer that violates the notice requirement with respect to a unit of local government, and it does not apply if the employer pays each aggrieved employee what it owes within 3 weeks of ordering the shutdown or layoff[8]. A court may reduce the liability or penalty, in its discretion, where the employer acted in good faith and had reasonable grounds for believing the act or omission was not a violation[8].
Divestitures. The sale-of-business rule is the divestiture answer. In a sale of part or all of an employer's business, the seller is responsible for notice up to and including the effective date of the sale, and after the effective date the purchaser is responsible[6]. Any employee of the seller, other than a part-time employee, as of the effective date is considered an employee of the purchaser immediately after the effective date[6]. The consequence for a buyer: a layoff it plans after closing is its own notice duty, and the seller's employees other than part-time employees are treated as the buyer's employees immediately after the effective date. For a seller: cutting people the day before closing is the seller's notice problem. Because the responsibility changes on the effective date, the purchase agreement should say who plans and pays for post-closing reductions, and the purchaser should not assume it can hold a pre-closing layoff in reserve.
State law varies. Many states have their own advance-notice laws, sometimes with lower thresholds. This chapter tests only the federal rule.
Reductions and release agreements: OWBPA
When a reduction offers severance in exchange for a release of claims, the Older Workers Benefit Protection Act (OWBPA) governs the release of age claims under the Age Discrimination in Employment Act. The statute lists conditions for a knowing and voluntary waiver. Four are common exam targets.
- The individual waives rights or claims only in exchange for consideration in addition to anything of value to which the individual is already entitled[9]. Paying what is already owed is not consideration.
- The individual is advised in writing to consult with an attorney before executing the agreement[9].
- The individual is given at least 21 days to consider the agreement, or at least 45 days if the waiver is requested in connection with an exit incentive or other termination program offered to a group or class of employees[9].
- For at least 7 days after signing, the individual may revoke, and the agreement is not effective or enforceable until the revocation period has expired[9].
For a group program, the employer must also disclose information about the program. That includes the job titles and ages of all individuals eligible or selected for the program, and the ages of all individuals in the same job classification or organizational unit who are not eligible or selected[9].
Worked example (illustrative). An employer announces a group exit incentive on March 1 and hands out agreements that day. Under the 45-day period the earliest an employee can be required to decide is April 15. If an employee signs on the last day, the 7-day revocation period runs after signing, so the agreement takes effect eight days after the signing date at the earliest. The mistake is to use the 21-day period because "each person signs their own agreement." The 45 days follows the program, not the signature. The age-40 protection itself comes from the ADEA, which limits its prohibitions to individuals who are at least 40 years of age[10].
How this is tested: numbers (21, 45, 7) and the group-versus-individual distinction. A common wrong path is to assume the 7-day revocation period can be waived by a shorter negotiated window. The statute makes it a condition of the waiver.
Sources cited in this excerpt
- SPHR Exam Content Outline. HR Certification Institute. https://www.hrci.org/docs/default-source/default-document-library/hrci_sphr-exam-content-outline.pdf?sfvrsn=5a8a173f_3
- Introduction to Business 2e (OpenStax). OpenStax, Rice University. https://assets.openstax.org/oscms-prodcms/media/documents/Introduction_to_Business_2e_-_WEB.pdf
- Workforce projection methods (PMC11025158). Peer-reviewed open-access article, Europe PMC. https://europepmc.org/article/PMC/PMC11025158
- Markov chain manpower models (PMC9972330). Peer-reviewed open-access article, Europe PMC. https://europepmc.org/article/PMC/PMC9972330
- Job Openings and Labor Turnover Survey — Data Definitions. U.S. Bureau of Labor Statistics. https://www.bls.gov/jlt/jltdef.htm
- 29 U.S.C. § 2101 (WARN Act § 2 (definitions)). Office of the Law Revision Counsel, U.S. House of Representatives. https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section2101&num=0&edition=prelim
- 29 U.S.C. § 2102 (WARN Act § 3 (notice)). Office of the Law Revision Counsel, U.S. House of Representatives. https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section2102&num=0&edition=prelim
- 29 U.S.C. § 2104 (WARN Act § 5, administration and enforcement). Office of the Law Revision Counsel, U.S. House of Representatives. https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section2104&num=0&edition=prelim
- 29 U.S.C. § 626 (ADEA administration and enforcement; waivers). Office of the Law Revision Counsel, U.S. House of Representatives. https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section626&num=0&edition=prelim
- 29 U.S.C. § 631 (ADEA age limits). Office of the Law Revision Counsel, U.S. House of Representatives. https://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title29-section631&num=0&edition=prelim