Financial research concept

Professional Staffing Contract Gross Margin

shows the gross profit retained from contract staffing revenue after consultant compensation, payroll taxes, benefits, and related direct costs.

By Lee BaileyPublished Sep 28, 2026

Research context

See what supports this page, how current it is, and where comparable or historical context is available.

Research date: Sep 28, 2026Use the dated article and cited sources for the definition, examples, and stated limitations.
Operating-model context: 10 connected conceptsPart of the reviewed Professional Staffing & Talent Solutions Economics; issuer definitions remain distinct where disclosed.
Company examples: 2 reviewed companiesRelationships reflect supported examples, not a normalized cross-company KPI ranking.

Cross-company percentages are not automatically comparable
Spread is only one part of the margin
Part of the Professional Staffing & Talent Solutions Economics
See It in Company Research
Continue Research

Professional staffing contract gross margin is the gross profit retained from contract staffing revenue after direct worker and assignment costs.

Kforce's total Flex gross profit margin was 26.9% in the second quarter of 2026, up from 25.8% a year earlier. Robert Half's contract talent gross margin was 39.1% in both the second quarter of 2026 and the prior-year quarter.

Cross-company percentages are not automatically comparable

Kforce and Robert Half serve different client, skill, geography, and assignment mixes. Their treatment of reimbursable expenses and the mix of conversion revenue can also affect the reported margin.

The right analytical task is to understand each issuer's margin drivers first, then compare only after preserving those scope differences.

Spread is only one part of the margin

Kforce says Flex gross profit reflects the pay-bill spread, payroll taxes, benefits costs, and billable expenses. Robert Half similarly identifies pay-bill spreads, fringe costs, and conversion revenue as key contract-talent gross-margin drivers.

A higher average bill rate therefore does not guarantee margin expansion if worker pay, benefits, or assignment mix rise faster.

Primary sources: Kforce second-quarter 2026 Form 10-Q, Robert Half second-quarter 2026 Form 10-Q, and Robert Half 2025 Form 10-K.

Part of the Professional Staffing & Talent Solutions Economics

Connect contract staffing volume, billing rates, calendar normalization, worker-pay spreads, gross margin, and permanent-placement count and fee economics.

Browse the full operating model in Company Analysis →

Where this concept fits

Contract staffing spread and gross marginCurrent relationship
The pay-bill spread captures the gap between customer billing and worker pay, while contract gross margin incorporates payroll taxes, benefits, reimbursable expenses, conversion revenue, and other direct-cost effects around that spread.
Staffing Contract Gross MarginCurrent conceptStaffing Pay-Bill Spread
Contract staffing volume, rate, and calendar
Billable hours measure delivered labor volume, average bill rate captures pricing and assignment mix, billing-day adjustment normalizes the calendar, and the volume-rate bridge explains how those pieces combine into contract revenue growth.
Staffing Average Bill Rate Staffing Billable Hours Staffing Billing-Day Adjustment Staffing Volume-Rate Bridge
Permanent placement and contract-to-hire economics
Permanent-placement revenue is driven by successful placement count and average fee, while conversion revenue captures a separate contract-to-hire path that can contribute high-margin fee revenue without adding contract hours.
Average Placement Fee Staffing Conversion Revenue Permanent Placement Count Permanent Placement Revenue

Staffing Average Bill Rate
Average Placement Fee
Staffing Billable Hours
Staffing Billing-Day Adjustment
Staffing Contract Gross MarginCurrent concept
Staffing Conversion Revenue
Staffing Pay-Bill Spread
Permanent Placement Count
Permanent Placement Revenue
Staffing Volume-Rate Bridge

See It in Company Research

These companies are examples of how the concept is reported or discussed in public filings. Definitions can differ by issuer; these links open company research rather than a normalized metric comparison.

KFRCOpen operating-model research →10 of 10 reviewed concepts in Professional Staffing & Talent Solutions EconomicsContract staffing spread and gross margin2 of 2 bridge concepts supportedContinue through this bridge:Staffing Pay-Bill Spread
RHIOpen operating-model research →10 of 10 reviewed concepts in Professional Staffing & Talent Solutions EconomicsContract staffing spread and gross margin2 of 2 bridge concepts supportedContinue through this bridge:Staffing Pay-Bill Spread

Continue Research

Continue from the concept into the Grizzly Bulls research surface that best matches the next question. These links are research continuations, not recommendations or required steps.

Compare stocks

Compare contract staffing margins

Compare gross margin only after preserving worker-pay, benefits, payroll-tax, reimbursable-expense, and assignment-mix differences.

Continue research

Explore more topics in the Financial Research Encyclopedia.