Thank you, Cynthia, and good morning. Welcome to Kelly Services 2018 First Quarter Conference Call. With me on today's call is Olivier Thirot, our CFO.
Let me remind you that any comments made during this call, including the Q&A, may include forward-looking statements about our expectations for future performance. Actual results could differ materially from those suggested by our comments, and we have no obligation to update the statements made on this call. Please refer to our SEC filings for a description of the risk factors that could influence the company's actual future performance.
As we walk through our results this morning, let me point out that my year-over-year comparisons are represented in nominal currency with the exception of our international segment, which is in constant currency.
Turning to Kelly's first quarter results. Revenue was $1.4 billion, up 6.2% compared to the first quarter last year and in line with our expectations. Reported earnings from operations were $12 million in the first quarter compared to $16.4 million last year, and diluted earnings per share were $0.74 compared to the $0.31 per share last year. As we indicated on our fourth quarter call, while we continued to grow in Q1, it was at a slower pace. Our first quarter revenue growth rate and our results were mixed as slowing growth in our commercial staffing product was partially offset by professional and technical products in the U.S., along with growth in our outcome-based services.
Now let's take a look at how Kelly's 3 operating segments performed in the first quarter, starting with Americas Staffing. Americas Staffing revenue increased 5% in the first quarter compared to the same period last year.
Commercial staffing revenue increased 2% over prior year, a slower growth rate compared with the previous quarters, due mainly to slowing growth in light industrial, the decision to exit certain accounts due to pricing discipline and a challenging candidate market.
Kelly Educational Staffing delivered revenue growth of 18% in the first quarter. This growth rate was favorably impacted by the September 2017 acquisition of Teachers On Call. Excluding Teachers On Call, KES revenue was flat to the prior year as first quarter results were impacted by weather-related school closures and the timing of this year's school vacation schedule.
Revenue in our Professional and Technical specialties increased 8% in the first quarter compared to last year, with year-over-year growth in all specialties continuing the positive trend we saw last quarter.
On a combined basis, total perm fees were up 23% year-over-year with growth in both Commercial and Professional and Technical specialties. A pickup in customer hiring of temporary employees in our commercial product contributed to the slowing growth rate in commercial staffing in the first quarter.
The first quarter gross profit rate in Americas Staffing was 17.9%, down 50 basis points from a year ago due to changes in business mix, partially offset by higher perm fees. Expenses for the quarter were up in Americas Staffing by 9% year-over-year, primarily the result of additional sales and recruiting resources compared to the prior year and to the addition of Teachers On Call. All told, the Americas Staffing segment achieved an operating profit of $16.1 million in the quarter compared to $21.2 million last year.
Let's now turn to our International Staffing operations outside of the Americas. Revenue in International Staffing increased 22% compared to the prior year in nominal U.S. dollars. On a constant currency basis, revenue increased 9% across the regions in Europe. For ease of reference, the remainder of my comments on International Staffing will be on a constant currency basis.
Fee-based income for the quarter was up 11% year-over-year. The segment's reported GP rate was 13.7% for the first quarter. The year-over-year drop in GP rate was driven mainly by a onetime benefit, which lowered cost of services in the first quarter of 2017. Excluding the effects of that onetime benefit, increases in GP dollars and fee-based hours growth were offset by declines in customer mix in the first quarter. Expenses were 1% lower than prior year due to continued effective cost management across the region. In summary, International Staffing's reported operating profit was $5 million compared to $5.2 million a year ago.
Now let's turn to results of our Global Talent Solutions, or GTS, reporting segment. The GTS reporting segment reflects the 2 primary ways that large clients in this segment are buying from us: talent fulfillment and outcome-based services. I'll discuss each business's results separately. But first, let's take a look at how GTS performed as a whole in the first quarter.
GTS revenue was flat year-over-year, while gross profit increased 2% for the quarter. Revenue increased year-over-year in our KellyConnect, Business Process Outsourcing, Contingent Workforce Outsourcing and Recruitment Process Outsourcing products offset by declines in our centrally delivered staffing and Payroll Process Outsourcing products.
Now let's look at the gross profit results in each of the 2 GTS businesses. Our talent fulfillment business is made up of our Contingent Workforce Outsourcing, Payroll Process Outsourcing, centrally delivered staffing and Recruitment Process Outsourcing products. Gross profit in the talent fulfillment business was down 3% year-over-year, due primarily to decreased revenue in our centrally delivered staffing and PPO products due to customer-specific declines in demand and to a lesser extent, the impact of our decision to exit some low-margin accounts.
Gross profit in centrally delivered staffing was also negatively impacted this quarter by an increase in our employee-related benefit costs and the sale of our health care staffing specialty. These year-over-year GP decreases were partially offset by continued double-digit GP increases in our CWO product as well as double-digit GP growth this quarter in our RPO product. We are pleased with the continuing growth in our CWO and RPO products.
Now turning to our outcome-based services. Business -- this business is comprised of our BPO, KellyConnect, Kelly legal managed services and advisory services products. Gross profit in our outcome-based services business increased 18% year-over-year, driven primarily by continued momentum and strong results in both our KellyConnect and BPO products as a result of program expansions and new BPO wins.
Overall, the GTS segment gross profit rate was 18.9% for the quarter, up 30 basis points year-over-year. Expenses in GTS were up 1% year-over-year in the first quarter and up 4% when adjusted for last year's restructuring charges. The like-for-like increases were due to additional headcount and salary costs related to the addition of new programs in our outcome-based services business and our CWO product. These increases were partially offset by lower salary costs in centrally delivered staffing and in PPO as we aligned our resource levels to the lower volume in these products, coupled with continuing savings from last year's Q1 restructuring in our talent fulfillment business. All told, GTS first quarter operating profit was $16 million, up 5%, but down 7% when we exclude last year's Q1 restructuring charges.
I'll now turn the call over to Olivier, who will cover our quarterly results for the entire company.