Co-Employment: HR, Payroll, Legal Issues & How to Avoid Risks

Nikolina Ristoska
Written by:
Nikolina Ristoska
Head of Operations at EOR Overview
Last updated: December 23, 2024
Co-employment is a legal arrangement where two companies share employer responsibilities for the same worker, dividing duties such as payroll administration, benefits management, and day-to-day supervision to optimize workforce management. As remote work becomes increasingly common and talent acquisition grows more competitive, understanding co-employment can provide your organization with greater flexibility, reduced administrative burden, and access to specialized expertise.

What is co-employment?

Co-employment is a business relationship where two companies simultaneously share legal employer responsibilities for the same worker. In this arrangement, each employer assumes specific duties related to the employment relationship, creating a division of employer obligations that can benefit both the worker and the companies involved.

The most common co-employment scenario occurs when a business works with a Professional Employer Organization (PEO) or staffing agency. While one employer (typically the client

company) maintains day-to-day direction of the employee's work, the other employer (usually the PEO) handles administrative functions like payroll processing, benefits administration, and compliance management.

This shared employment model creates a unique legal framework where both entities have certain rights and responsibilities toward the worker. Understanding these dynamics is essential for HR managers and business leaders to navigate co-employment relationships effectively while minimizing potential risks.

How does co-employment work?

Co-employment functions through a carefully structured division of employer responsibilities between two entities. When a company enters a co-employment relationship, typically with a PEO or staffing agency, they establishes clear boundaries regarding which employer handles specific aspects of the employment relationship.

The key components of a co-employment relationship include contractual agreements, division of responsibilities, shared liability, employee communication, and compliance management. These components form the foundation of a successful co-employment arrangement. These key components are listed in detail below:

  • Contractual agreements: A formal contract between the client company and the co-employer (PEO or staffing agency) outlines the specific responsibilities of each party, compensation structures, and terms of the relationship.

  • Division of responsibilities: The client company typically maintains control over day-to-day operations, work assignments, and performance management, while the co-employer handles administrative functions like payroll processing, benefits administration, and HR compliance.

  • Shared liability: Both employers share certain legal responsibilities and potential liabilities related to employment laws, workplace safety, and employee rights, making clear communication essential.

  • Employee communication: Workers must be clearly informed about the co-employment relationship, including who to contact for different employment-related matters such as payroll questions versus work assignments.

  • Compliance management: The co-employer often takes primary responsibility for ensuring compliance with employment laws, tax regulations, and benefits requirements across multiple jurisdictions.

The co-employment partner handles key HR functions, including employee onboarding, payroll, benefits administration, and compliance with local employment laws.

In practice, regular employees working under a co-employment arrangement perform their job functions at the client company's location or remotely under the client's supervision. However, their official employer of record for employment taxes and legal purposes is often the PEO or staffing agency, which issues their paychecks, provides benefits, and handles HR administration.

šŸŽÆ Pro Tip: When establishing a co-employment relationship, create a detailed responsibility matrix that clearly delineates which employer handles specific functions like hiring decisions, performance reviews, terminations, and compliance reporting. This clarity helps prevent gaps in responsibility and reduces potential legal issues.

What are the benefits of a co-employment relationship?

Co-employment arrangements offer significant advantages for organizations seeking to optimize their workforce management while focusing on core business operations. These benefits are particularly valuable for growing companies, businesses expanding into new markets, and organizations looking to enhance their HR capabilities without substantial internal investment.

The key benefits of co-employment include reduced administrative burden, access to better benefits, enhanced compliance management, cost savings, scalability, and risk mitigation. These advantages make co-employment an attractive option for many organizations. These key benefits are listed in detail below:

  • Reduced administrative burden: By transferring responsibilities like payroll processing, benefits administration, and HR paperwork to a PEO or staffing agency, your internal team can focus on strategic initiatives rather than time-consuming administrative tasks.

  • Access to better benefits: Co-employment arrangements allow smaller companies to offer enterprise-level benefits packages by leveraging the co-employer's larger employee pool and negotiating power with health insurance providers and benefits vendors.

  • Enhanced compliance management: Professional co-employers specialize in staying current with complex and changing employment laws across multiple jurisdictions, reducing your compliance risk and administrative overhead.

  • Cost savings: Organizations often realize significant cost reductions through economies of scale in HR administration, more competitive insurance rates, and reduced need for internal HR staff dedicated to administrative functions. They can also conduct safety audits and recommend employee training programs to reduce workplace injuries and minimize employer liability.

  • Scalability: Co-employment provides flexibility to scale your workforce up or down quickly without the corresponding need to expand your HR infrastructure, making it ideal for companies with fluctuating staffing needs.

  • Risk mitigation: Sharing employer responsibilities with an experienced PEO or staffing agency can help reduce employment-related legal risks, as these organizations typically maintain specialized expertise in compliance and best practices.

For tech companies and startups in particular, co-employment can be a strategic advantage in the competitive talent market. It allows these organizations to compete with larger enterprises by offering comprehensive benefits packages while maintaining the agility and focus needed for rapid growth and innovation.

PEOs often support onboarding, employee training, and performance management. Many also offer strategic services that help employers adapt to evolving workforce trends, including shifting demographics and the rise of contract and short-term workers.

Examples of Co-Employment

What are examples of co-employment?

Co-employment manifests in several common business arrangements across various industries. Understanding these practical examples can help you identify potential co-employment situations in your own organization and implement appropriate management strategies.

Common examples of co-employment arrangements include PEO partnerships, staffing agency relationships, joint ventures, franchise operations, and global employment organizations. These examples demonstrate the versatility of co-employment across different business contexts. These common examples are listed in detail below:

  • PEO partnerships: A small tech startup partners with PEOs to handle all HR administration, payroll, and benefits management while maintaining control over day-to-day operations and technical direction of their software developers.

  • Staffing agency relationships: A financial services firm uses a staffing agency to provide long-term contract workers who function as part of their team but remain on the staffing agency's payroll, creating a co-employment relationship.

  • Joint ventures: Two companies form a joint venture where employees work on collaborative projects while technically being employed by one of the parent companies, creating a situation where both entities direct the work but only one handles employment administration.

  • Franchise operations: In some franchise arrangements, the franchisor may provide certain HR services or benefits programs while the franchisee maintains day-to-day management of employees, creating a form of co-employment.

  • Global employment organizations: A company expanding internationally works with a global PEO that serves as the legal employer in foreign countries where the company lacks an entity, allowing them to hire talent globally while the PEO ensures compliance with local employment laws.

In the tech industry, co-employment is particularly common when companies need specialized talent for project-based work. For instance, a software company might partner with a staffing agency to bring in developers with specific expertise for a major project. The developers work directly under the software company's technical leadership but remain employed by the staffing agency for administrative purposes.

Similarly, in the financial sector, firms often use co-employment arrangements to quickly scale operations during busy periods or to access specialized talent for compliance and regulatory projects without taking on the full administrative burden of direct employment.

The Risk of Co-Employment to Avoid

What are the risks of co-employment to avoid?

While co-employment offers numerous benefits, it also presents potential risks that organizations must proactively manage. Understanding and addressing these challenges is essential for maintaining compliant and effective co-employment relationships.

Companies must carefully vet credible co-employment partners with the expertise to manage HR responsibilities and ensure full compliance with employment laws and regulations.

The primary risks associated with co-employment include misclassification issues, unclear division of responsibilities, compliance violations, employee confusion, liability disputes, and intellectual property concerns. Addressing these risks requires careful planning and management. These primary risks are listed in detail below:

  • Misclassification issues: Failing to properly document and structure the co-employment relationship can lead to worker misclassification claims, potentially resulting in significant tax penalties, back wages, and benefits obligations.

  • Unclear division of responsibilities: Without clearly defined roles between the client company and the co-employer, critical responsibilities may fall through the cracks, creating compliance gaps and operational inefficiencies.

  • Compliance violations: If either party in the co-employment relationship fails to fulfill their regulatory obligations, both companies may face legal consequences, as co-employers often share liability for compliance with employment laws.

  • Employee confusion: Workers who don't understand the co-employment structure may be uncertain about reporting relationships, benefits eligibility, or who to contact with workplace concerns, leading to decreased satisfaction and productivity.

  • Liability disputes: When workplace issues arise, determining which employer bears responsibility can become contentious, potentially leading to legal disputes between the co-employers.

  • Intellectual property concerns: Without proper agreements in place, questions may arise about which employer owns the intellectual property created by workers in a co-employment arrangement.

  • Wage-base restart: When a business enters or exits a co-employment arrangement midyear, it may trigger a wage-based restart for certain payroll taxes.

  • Tax liability: If a PEO is not IRS-certified and fails to pay taxes on behalf of a client, the client may still be held liable and face penalties—even if the business already paid the PEO under the service agreement.

One of the most significant co-employment risks occurs when companies attempt to use it primarily as a strategy to avoid employer obligations. Courts and regulatory agencies increasingly look beyond formal arrangements to examine the actual working relationship, and they may hold both entities accountable for employment law violations regardless of contractual terms.

Companies partnering with a co-employer to manage contractor obligations must conduct thorough due diligence. It's essential to ensure the co-employer understands misclassification risks and complies with relevant laws. Businesses should only enter co-employment agreements with reputable partners who specialize in contractor engagement and are well-versed in classification regulations.

āš ļø Warning: Treating co-employed workers differently from direct employees in terms of inclusion in company events, access to facilities, or general workplace integration can create legal risks under the concept of joint employment. Courts may view such disparate treatment as evidence that you're attempting to avoid employer obligations rather than establishing a legitimate co-employment relationship.

To mitigate these risks, implement clear written agreements that specify each party's responsibilities, establish regular compliance reviews, provide transparent communication to workers about the co-employment relationship, and consult with legal counsel experienced in employment law when structuring co-employment arrangements.

What is not co-employment?

Understanding what co-employment is not can be just as important as knowing what it is. Several related employment arrangements are often confused with co-employment but operate under different legal frameworks and principles. Distinguishing between these concepts is crucial for proper compliance and effective workforce management.

What does employee leasing mean?

Employee leasing is an arrangement where a company (the lessor) provides workers to another company (the lessee) for a specific period or project. Unlike co-employment, employee leasing typically involves a temporary transfer of workers who remain solely employed by the leasing company. The leasing company maintains exclusive employer status and handles all employment responsibilities including hiring, firing, and benefits administration.

In employee leasing arrangements, workers are not simultaneously employed by both companies. Instead, they work under the direction of the lessee company while remaining on the lessor's payroll. This distinction is important because it affects liability distribution, tax obligations, and compliance requirements differently than co-employment relationships.

What does joint employment mean?

Joint employment is a legal concept where two or more companies share control over a worker's employment to such a degree that they are both considered employers under labor laws. This arrangement often occurs unintentionally as a result of business relationships rather than through deliberate structuring. Joint employment is frequently determined by regulatory agencies or courts based on the actual working relationship, regardless of contractual terms.

The key distinction from co-employment is that joint employment typically arises from the factual circumstances of how work is controlled and directed, not from a formal agreement. Joint employers are generally held jointly and severally liable for compliance with employment laws, meaning either employer can be fully held responsible for violations, regardless of which entity directly caused the issue.

Is co-employment the same as joint employment?

No, co-employment and joint employment are distinct legal concepts, though they are frequently confused. Co-employment is a deliberate business arrangement where two entities formally agree to share job duties through a structured agreement. Joint employment, conversely, is often determined by regulatory agencies based on the actual control exercised over workers, regardless of the formal relationship between the businesses.

Characteristic

Co-Employment

Joint Employment

Formation

Intentionally created through formal agreement

Often unintentionally created through business practices

Legal Structure

Clearly defined division of responsibilities

Determined by actual control exercised over workers

Primary Purpose

To optimize HR tasks and share employer benefits

Not purposeful; results from business relationships

Liability

Distributed according to agreement terms

Joint and several liability for both employers

The distinction matters significantly for compliance purposes. In co-employment (the staffing company or PEO), responsibilities are clearly allocated between parties, while joint employment can create unexpected liabilities when a company is deemed to be an employer despite having no formal employment relationship with the worker. Understanding this difference helps organizations structure their workforce arrangements appropriately.

What are independent contractor relationships?

Independent contractor relationships involve businesses engaging self-employed individuals to provide specific services without creating an employer-employee relationship. Unlike co-employment, independent contractors maintain autonomy over how they complete their work and typically serve multiple clients. They are responsible for their own taxes, benefits, and business expenses.

The distinction between independent contractors and co-employment is significant. In co-employment, the worker is an employee of both entities, whereas independent contractors are not employees of any company they serve. This classification affects tax obligations, benefit eligibility, and liability for workplace injuries or discrimination claims.

Misclassifying employees as independent contractors to avoid co-employment can result in severe penalties from tax authorities and labor departments. The classification depends on the actual working relationship, not just contractual language, with factors like control over work methods, integration into the business, and economic dependence determining the proper classification.

What are alternatives to co-employment?

While co-employment offers specific advantages, it's not the only solution for flexible workforce management. Several alternative arrangements can help organizations achieve their staffing objectives while maintaining different legal and operational structures.

The main alternatives to co-employment include direct employment, independent contractor engagement, project-based outsourcing, employee leasing, and Employer of Record (EOR) services. Each alternative offers distinct advantages for different business needs. These main alternatives are listed in detail below:

  • Direct employment: Hiring employees directly and building an internal HR infrastructure provides maximum control over the workforce and culture, though it requires significant administrative investment and creates direct employer liability.

  • Independent contractor engagement: Contracting with self-employed professionals for specific projects or services can provide flexibility without creating an employment relationship, though misclassification risks must be carefully managed.

  • Project-based outsourcing: Engaging a vendor company to deliver complete projects or services rather than individual workers eliminates co-employment concerns while still accessing external expertise.

  • Employee leasing: Similar to but legally distinct from PEO arrangements, leasing involves a company providing workers who remain its employees but work exclusively for the client, often for a specific duration or project.

  • Employer of Record (EOR) services: An EOR becomes the full legal employer of record for workers in locations where a company lacks a legal entity, handling all employment responsibilities while the client directs the daily work.

For startups and growing companies, the choice between co-employment and these alternatives often depends on specific business needs, growth trajectory, and geographic considerations. For instance, a tech startup expanding internationally might choose an EOR solution for global hiring before establishing legal entities in each country, then transition to a co-employment PEO relationship as their presence grows.

Financial services firms with fluctuating project demands might combine several approaches—maintaining a core team of direct employees while using project-based outsourcing for specialized functions and independent contractors for advisory roles. This hybrid approach provides both stability and flexibility while managing different types of employment relationships appropriately.

When evaluating alternatives to co-employment, consider factors such as the level of control needed over workers, the duration of the relationship, the importance of the function to your core business, compliance requirements in relevant jurisdictions, and the administrative resources available within your organization.

Remember that co-employment relationships require careful documentation, clear communication, and ongoing management to avoid potential legal and operational pitfalls. Regularly review your arrangements to ensure they continue to meet your business needs while maintaining compliance with evolving employment regulations.