Contingent Workforce

Who counts as a contingent worker

The common thread is that the person is not on your permanent payroll with an open-ended employment relationship. The main categories:

• Temporary agency workers. Employed and paid by a staffing agency, working at your site under your supervision. The largest group in warehousing, manufacturing, contact centers and healthcare.
• Independent contractors and freelancers. Self-employed, paid on a 1099 in the US, controlling how they do the work.
• Statement-of-work (SOW) workers. Employed by a vendor delivering a defined project or outcome, such as an IT implementation or an outsourced customer support queue.
• Consultants. Often a subset of SOW or independent contractors, engaged for expertise.
• Payrolled workers. People you found yourself but who are employed through a payrolling provider or employer of record.
• Gig and on-demand workers. Booked shift by shift through a platform.

Some organizations also include seasonal direct hires and fixed-term employees, since they are planned around a temporary need. Agree on a definition before you try to count.

Why companies use contingent labor

Flexibility is the obvious reason. A parcel distribution center may run 600 associates in summer and 1,400 in November and December. Hiring and laying off 800 permanent employees every year is slow, expensive and bad for morale. Bringing in agency temps for peak is the standard answer.

Other reasons:

• Speed. A good staffing supplier can start 50 workers next Monday.
• Specialist skills. A contractor for a six-month system migration costs less than a permanent hire who is not needed after go-live.
• Testing roles and people. Temp-to-hire lets employers judge attendance and performance before committing.
• Headcount limits. Sometimes budget allows spend but not permanent headcount. This is a common reason, and a poor one when the work is ongoing.

The trade-offs are higher hourly cost through markups, less loyalty and institutional knowledge, and legal risk when contingent workers are managed like employees for years.

How large employers manage a contingent workforce

Contingent workforce management is the set of processes, suppliers and systems used to buy, track and govern non-employee labor. At scale it usually involves:

• A program office, internal or outsourced to a managed service provider
• A [vendor management system](/glossary/vms/) for requisitions, timesheets and invoices
• A tiered supplier list with negotiated rate cards
• Policies on tenure limits, classification review, onboarding and offboarding
• Reporting on headcount, spend, tenure, fill rate and supplier performance

The more mature step is total talent management: planning permanent and contingent labor together so that a hiring manager asks what work needs doing and then picks the right way to get it done, rather than defaulting to a requisition or an agency call.

A worked example: sizing peak contingent labor

A regional grocery distributor plans for a holiday peak. Normal weekly volume needs 220 selectors. Peak volume is 40% higher for eight weeks, so it needs about 308 selectors on the floor.

The operations manager, Kevin, plans contingent labor like this:

• Extra selectors needed on the floor: 88
• Expected absenteeism among temps: 12%, so he needs 88 ÷ 0.88 = 100 active temps
• Expected attrition during the first two weeks: 25%, so he orders about 100 ÷ 0.75 = 133 starts, staggered over three weeks
• Agency bill rate: $25.50 an hour against a $19 pay rate

At 40 hours a week for eight weeks, 100 active temps cost about 100 × 40 × 8 × $25.50 = $816,000. Kevin tracks fill rate, show rate and productivity per temp per supplier each week, and moves orders to the two agencies with the best show rates.

Worker classification and co-employment risk

Two legal issues matter most.

The first is worker classification. Calling someone an independent contractor does not make them one. In the US, the IRS looks at behavioral control, financial control and the relationship of the parties. The Department of Labor applies an economic reality test under the FLSA. Several states, including California under AB 5, use a stricter ABC test. Misclassification can lead to back wages, overtime, taxes, penalties and benefits claims.

The second is co-employment and joint employment. When a client controls a temp worker's schedule, discipline and daily work for long periods, the client may be treated as a joint employer for wage and hour, discrimination or labor law purposes. Tenure limits, clear supplier responsibilities and not treating temps as employees in benefits or performance programs reduce the risk without eliminating it.

Rules vary by state and country, so review your program with employment counsel.

Metrics to track

• Contingent headcount and share of total workforce, by site and function
• Total contingent spend and average bill rate by job category
• Fill rate and time to fill per supplier
• Show rate and early attrition for temp starts
• Average tenure, and the number of workers past your tenure limit
• Conversion rate of temps to permanent hires
• Cost per productive hour, comparing contingent and permanent labor for the same work

If contingent workers do the same job as employees year round, compare the fully loaded cost honestly. Sometimes converting them is cheaper and better for retention.

Common mistakes

• No one owns it. Contingent spend sits in procurement, HR thinks it is not their concern, and site managers buy labor on their own.
• Permatemps. Workers on assignment for years doing core work, with none of the stability or benefits of employees.
• Classification by convenience. Making someone a contractor to avoid headcount limits.
• Measuring only cost. Cheap labor with a 40% no-show rate is not cheap.
• Different standards for contingent workers. Safety training, harassment policies and access controls must cover everyone on site.