Burton Goldfield
Analyst · JPMorgan
Thank you, Jimmy. There is no question we are off to a very strong start in 2014. The complexities facing small and medium businesses continue unabated. These include the Affordable Care Act, wage and hour issues, diverging federal state and local compliance requirements. Our differentiated bundled solutions, including TriNet Passport, TriNet Ambrose and TriNet SOI, are resonating in each of the markets they serve. Additionally, our vertical channel strategy continues to strengthen our visibility and impact on the chosen verticals. We are winning new business by adding clients who were previously trying to stitch together their HR function through insurance brokers, software and limited internal capabilities. Approximately 3/4 of our new clients did not previously use a bundled solution.
Our net service revenues increased 31% year-over-year during the first quarter to $127.8 million. Our adjusted EBITDA increased 23% to $44.3 million. Our first quarter adjusted EBITDA margin was 34.7%, which puts us well on track to achieve our target margin level of 33% to 34% over the medium term. As of March 31, we served 241,944 work-site employees, or WSEs, across a wide variety of geographies and industries, up 5% sequentially quarter-over-quarter. Year-over-year, Q1 WSE growth was up 22%, organically. We are on track to deliver 25% growth in the sales channel. The goal is 375 frontline, quota-carrying reps by the end of Q2. At the end of March, we had 336 sales reps. This channel is vertically focused by product line and has deep knowledge of company-specific issues in their assigned industry sectors. I am pleased to report that we used $216.6 million from our IPO proceeds to pay down debt on our balance sheet as of March 31.
Given this is our first quarterly investor conference call and many of you are new to the company, I would like to take a moment to provide you with an overview of our organization, the opportunities we are pursuing, and the strategic plan we are executing to build shareholder value.
TriNet's mission is simple. We enable small and medium businesses to focus on business execution while we manage their critical HR needs. These include payroll, benefits and comprehensive human resources support. We serve a large and growing market, SMBs, employing nearly half of the American workforce. And for companies of this size, usually anywhere from 5 to 500 people, HR is not something they want to focus on. It is a complex job encumbered by a host of legal, regulatory, operational and reporting challenges. That's where TriNet comes in. We provide bundled solutions that address the needs of both the employees and the employers as they grow and evolve their companies. Three key components of our solution are: local HR expertise. The services are delivered by a team of over 200 HR professionals deployed in our 50-plus regional offices to quickly address our clients' most critical HR challenges. Business owners facing an HR challenge consistently invoke our motto, "Sounds serious. I'll call TriNet." Number two, our fully integrated cloud-based platform. The scalable platform provides on-demand reporting and mobile apps with real-time access to both company and employee information. This information can be as simple as the employee's up-to-date medical membership card on an iPhone to complex graphical reporting on turnover rates as they may correlate to bonus payouts; and number three, large company comparable benefit packages. These include over 105 medical plans in 50 states, as well as worker's compensation, flexible spending accounts and 401(k) offerings. These comprehensive benefits enable companies to attract and retain the very best talent.
Consider that the total HR spending annually among SMBs in the U.S. represents a $90 billion market. Today, only 5% of these companies currently use a bundled solution to manage their HR needs. We believe that this is a tremendous, untapped market opportunity. Our unique focus, knowledge base and scale provides a level of expertise and service that simply cannot be reproduced by stitching together multiple solutions through varied sources. We are the largest independent company whose sole focus is on providing a complete, bundled HR solution to small businesses. We are the only company successfully addressing this market with 3 distinct bundled solutions targeted to specific industries, supported by channels with deep vertical expertise. Our Ambrose product, characterized by high-touch service with the top-tier benefits and HR guidance from legal professionals, had strong sales during the first quarter. We attracted over 50 new hedge funds, as well as multiple private equity firms. This business is being driven by referrals as we deliver an exceptional product. Major wins in our SOI product line, characterized by complex, multistage HR and payroll needs came from large, regional retail chains, as well as light manufacturing and building services business, many with over 300 work-site employees. Among other factors, these groups were attracted to our SOI product because of the seamless solutions we offer in transitioning their health care to ACA-compliant offerings. Technology incubators, digital media, biotech firms and software startups represent a sampling of the Q1 wins for the Passport product. This product is characterized by an intuitive, paperless, self-serve platform and extensive selection of benefits.
In addition to our organic growth, we will also continue to look for selective acquisitions. These acquisitions will strengthen our products, technology and market penetration, as well as increase our revenue and cash flow. We will continue to innovate our products and services through internal development alliances and investment in technology. I am excited to share that in Q1, we announced the launch of TriNet Travel, a cloud-based online travel booking application that enforces compliance with corporate travel policies. TriNet Travel is seamlessly integrated with TriNet Expense, our award-winning expense management solution. I expect to see additional product releases, delivering incremental value to our clients over the coming months.
In summary, we had a terrific first quarter, and we are very pleased to report our results to you for the first time as a public company. By aggressively implementing our strategy, bundled HR solutions, vertical focus and sales force growth, we will have an outstanding opportunity to create value for our shareholders. I would like to acknowledge our operating management team, our sales force and all of the dedicated colleagues for their continued maniacal focus on providing the best customer service in the industry.
Now let me turn the call over to Bill Porter for the financial review. Bill?