What Is Co-Employment?

Understanding Co-Employment

Co-employment occurs when two or more entities simultaneously exercise sufficient control over a worker to be considered their "employer" under various employment laws. In the contingent workforce context, co-employment risk arises when a client company exercises enough direction and control over a staffing agency's worker that courts or regulators could deem the client a joint employer—exposing them to liability for wages, benefits, discrimination claims, and other employment obligations.

Co-employment is not inherently illegal—in fact, the PEO (Professional Employer Organization) model is built on intentional co-employment. The risk arises when co-employment is unintentional, as the client company may not be prepared for the legal and financial obligations that come with employer status.

How Co-Employment Risk Arises

The more control a client exercises over a contingent worker's day-to-day activities, the greater the co-employment risk. Key factors courts and regulators examine include:

• Direction and control: Does the client dictate how, when, and where the work is performed—not just what work is done?
• Integration: Is the worker integrated into the client's workforce—attending company meetings, using company email, sitting alongside employees?
• Duration: Has the engagement lasted years, resembling permanent employment rather than a temporary assignment?
• Performance management: Does the client conduct performance reviews, set goals, and manage the worker's career development?
• Economic dependence: Is the worker economically dependent on the client for their livelihood?

Consequences of Unintended Co-Employment

• Benefit liability: The client may be required to provide the same benefits (health insurance, retirement, PTO) to contingent workers as to employees.
• Tax exposure: Joint employer status can create tax withholding and reporting obligations.
• Discrimination and harassment claims: Workers may bring claims against both the staffing agency and the client.
• Wage and hour claims: The client may share liability for unpaid overtime, minimum wage violations, or misclassification.
• Collective bargaining: In some jurisdictions, co-employed workers may have the right to organize and bargain collectively with the client.

Mitigating Co-Employment Risk

Organizations manage co-employment risk through clear contracts that define each party's employer responsibilities, tenure limits on contingent assignments (commonly 18–24 months), training for hiring managers on appropriate worker interaction, and regular audits of contingent worker relationships. Technology solutions like VMS platforms can enforce tenure tracking and flag engagements that may create elevated risk.

Co-Employment and Human Cloud

Selecting workforce providers with strong compliance infrastructure is the first line of defense against co-employment risk. Human Cloud evaluates providers on compliance capabilities as part of the HC Score, helping organizations identify partners with robust employment practices, proper insurance coverage, and demonstrated compliance track records.