Direct Answer
Diversified support services companies provide outsourced non-core business services -- facility management, janitorial, security guarding, uniform services, food services, parking management, and business process outsourcing. Cintas Corporation ($9+ billion revenue) is the highest-quality compounder in the sector with exceptional margins from its uniform, workwear, and facility services business. ABM Industries, Aramark, and Sodexo provide facility and food services at scale.
The Outsourcing Model: Focus, Scale, and Cost Economics
Support services outsourcing follows a consistent economic logic: companies that are not themselves in the facility management, uniform, or security business can achieve better outcomes by contracting specialists who have scale, expertise, and dedicated management focus rather than operating these non-core functions internally. A hospital system's core competency is clinical care -- not laundry management, food service, or security guarding. By contracting Aramark for food services, ABM for janitorial, and Cintas for workwear, the hospital's management team can focus on clinical operations while paying specialists who achieve better cost and quality on the outsourced functions.
Support services companies achieve their scale advantages through route density (a uniform route driver serving 20 customers per day is more efficient than each customer's internal team), purchasing power (buying cleaning supplies, uniforms, or food ingredients in quantities that generate better pricing than individual businesses can achieve), and management systems (proprietary scheduling, quality control, and compliance monitoring systems that require specialist investment). Once a large-scale outsourcer builds these advantages, smaller competitors and self-performed alternatives struggle to match their cost efficiency.
Contract length and retention rates are key metrics: support services contracts typically run 3-7 years, with renewal rates in the 90-95% range for well-executed programs. The recurring, contracted nature of these revenues gives support services companies more predictable cash flows than project-based businesses and allows confident workforce and capital planning.
Cintas Corporation: The Exceptional Compounder in Support Services
Cintas Corporation (CTAS) is the standout business quality story in support services, consistently earning 25-30% ROIC and delivering 15-20% annual earnings growth over decades. Its core product -- uniform and workwear rental services -- is systematically underestimated by those who view it as a laundry company. Cintas picks up soiled uniforms, launders and repairs them, and delivers cleaned, rack-ready uniforms to customers' employees on a weekly route basis. The combination of route density (thousands of stops per route driver per week), proprietary processing (high-speed, automated laundry facilities), and the subscription-like recurring revenue makes Cintas's uniform rental economics exceptional.
Cintas's growth engine is new customer acquisition (selling uniform and workwear rental to businesses that currently self-purchase uniforms or don't have formal uniform programs) and cross-selling additional services to existing customers. Its sales force calls on businesses across all industries (manufacturing, healthcare, food service, retail, automotive service) selling an expanding suite: uniforms, floor mats, restroom supplies, fire protection services, first aid and safety products, and document management. Each additional service generates incremental margin at very low incremental cost because the route infrastructure (trucks, drivers, route scheduling) already exists.
Cintas's financial profile is exceptional for a service company: 47-49% gross margins (reflecting the value-added nature of managed workwear programs versus pure laundry), 22-24% operating margins, and 20%+ ROIC. These metrics exceed most specialty chemical, medical device, and technology companies -- remarkable for a company fundamentally providing laundry and workwear services. The secret is recurring revenue, route economics, and a long-tenured customer base (average customer relationship exceeds 10 years) that makes churn very low.
ABM Industries and Aramark: Scale Facility and Food Services
ABM Industries (ABM) provides janitorial, parking, electrical and mechanical services, and HVAC to commercial real estate, healthcare facilities, airports, and industrial facilities. ABM's revenue ($8+ billion) comes primarily from labor-intensive building services contracts; its margins are thin (3-5% EBIT) because janitorial services are commoditized and compete primarily on labor cost and service reliability. ABM's scale provides advantages in labor recruiting, training, and management systems, but the absence of a proprietary product (unlike Cintas's route-delivered uniform service) limits margin expansion potential.
Aramark Corporation (ARMK) provides food services (cafeteria, catering, vending) and uniform services to educational institutions, healthcare facilities, sports stadiums, and businesses. Aramark's food services segment (the majority of revenue) involves operating cafeterias and food outlets on behalf of hospital systems, universities, and corporations. Food service management contracts typically give Aramark control over food purchasing (capturing procurement scale advantages) while the client institution owns the cafeteria space and kitchen equipment. Food service management carries 4-7% EBIT margins for Aramark, with uniform services at somewhat higher margins.
Staffing and Workforce Services: Manpower, Robert Half, and the Labor Market
Temporary staffing companies (ManpowerGroup, Adecco, Robert Half International, Korn Ferry for executive search) connect workers seeking employment with businesses needing workers on a temporary, contract, or permanent basis. Temporary staffing revenue is highly cyclical -- it expands rapidly when businesses are growing and reluctant to add permanent headcount, and contracts sharply when economic conditions weaken and businesses reduce temporary workers first (before permanent employees). Robert Half International is the highest-quality US-listed staffing company, specialized in professional staffing (accounting/finance, legal, technology) where its relationships with specialized professionals and employer clients create meaningful differentiation over generalist staffing competitors.
Professional employer organizations (PEOs) like Automatic Data Processing's PEO business (ADP TotalSource), Paychex, and TriNet Group provide small businesses with outsourced HR services: payroll processing, benefits administration, workers' compensation management, and HR compliance. The PEO model is notable for its structural advantage: PEOs aggregate thousands of small employer clients into one large purchasing pool for health insurance and workers' compensation, providing benefits quality and pricing that small employers couldn't access independently. This aggregate purchasing power is the key value proposition driving PEO adoption by small businesses.
Investment Considerations: Cintas Premium vs. Cyclical Peers
Cintas trades at a significant premium to support services peers -- 35-45x earnings versus 12-18x for ABM and Aramark -- reflecting its demonstrably better business model (recurring, route-based revenue with proprietary processing) versus the more competitive, labor-intensive services of its peers. Whether Cintas deserves its premium depends on whether investors believe Cintas can sustain 15%+ EPS growth as it has for two decades. The case for: significant white-space opportunity remains in the total addressable market of businesses that could adopt uniform rental (50%+ of US businesses with workers in uniforms/workwear still self-purchase rather than rent); each new Cintas service line (fire protection, first aid) follows the same route-density playbook and competes against fragmented local competitors.
Support services sector returns correlate with economic activity (staffing and facilities volumes rise and fall with business activity) and labor market conditions (tight labor markets increase input costs for all labor-intensive services companies). Investors who buy high-quality support services companies (Cintas, Robert Half) through economic contractions can benefit from the cyclical rebound when business activity recovers, because these companies' recurring revenue models cushion the downturn more than pure discretionary services.
FAQ
Why does Cintas trade at such a high multiple compared to other service companies?
Cintas trades at 35-45x forward earnings because its business model has structural characteristics that justify premium multiples. The uniform rental business generates remarkably stable, recurring revenue: customers sign 3-5 year contracts and rarely switch (99%+ renewal rates on renewals that are offered), because changing uniform supplier requires retraining employees, updating logo designs, and adjusting route schedules. Cintas processes uniforms through proprietary, automated laundry facilities that achieve cost efficiency no small competitor can replicate. Each route truck services hundreds of customers per week; adding one more customer on an existing route has near-zero incremental cost. The result: 47-49% gross margins and 22-24% operating margins -- exceptional for any company, extraordinary for a service business. These financial characteristics (high margins, high retention, recurring revenue, route density advantages) justify premium valuation multiples because the earnings are more certain and durable than most businesses at any comparable multiple.
How does facility management outsourcing create value?
Facility management outsourcing creates value through specialization economies and scale. When a hospital system contracts ABM Industries for janitorial services, ABM provides: specialized infection-control cleaning expertise that matches Joint Commission standards; a trained workforce recruited and managed by ABM (reducing the hospital's HR burden); supply chain purchasing for cleaning chemicals and equipment at prices no individual hospital achieves; management systems (scheduling, quality auditing, complaint tracking) that hospitals would need to build and maintain internally; and liability insurance and workers' compensation coverage as part of the service. The hospital pays a monthly fee that is often comparable to or less than the fully-loaded cost of internal janitorial staff (wages, benefits, turnover, HR management, supply purchasing, supervision overhead). The outsourcer's value is delivering comparable or better service quality at equal or lower cost, while freeing the hospital's management to focus on clinical care rather than custodial management.
What is a professional employer organization (PEO) and how does it differ from a staffing company?
A professional employer organization (PEO) enters into a "co-employment" arrangement with small businesses: the PEO becomes the employer of record for the client's employees, handling payroll, benefits enrollment, workers' compensation, unemployment insurance, HR compliance, and tax withholding -- while the client business retains day-to-day control over the employees' work. The key benefit: the PEO aggregates employees from many small businesses (TriNet, for example, manages 300,000+ employees for small business clients) and uses that scale to negotiate group health insurance rates, workers' compensation premiums, and 401k plan fees that individual small businesses (with 10-50 employees) could never achieve. A small business using a PEO might access Fortune 500-quality health benefits at near-group rates, reducing employee turnover and recruitment costs. A staffing company is different: staffing companies place temporary or contract workers at client businesses, remaining the employment agency for those workers during the assignment, but the client chooses the specific workers and the relationship is transactional (project or temp assignment) rather than an ongoing co-employment relationship covering the client's core workforce.
How cyclical are support services companies compared to the broader market?
Support services companies span a wide range of cyclicality. Cintas and facility management services have relatively low cyclicality: commercial buildings still need janitorial services and companies still need workwear even in recessions, though temporary discretionary spending reductions can slow new customer acquisition. Temporary staffing companies are highly cyclical -- they function as a first-hire/first-fire employment buffer, so when businesses anticipate a slowdown they immediately reduce temporary headcount while retaining permanent employees. ManpowerGroup and Robert Half revenues can fall 20-30% in recessions and recover rapidly afterward. Food services management (Aramark, Sodexo) falls in the middle: hospital cafeterias continue operating regardless of economic conditions; corporate cafeterias may close or reduce service in economic downturns. Investors seeking defensive support services exposure should weight toward facility management and uniform rental (Cintas) versus staffing companies, which are among the most economically sensitive service sector investments.