Dual labour markets: definition and HR guide (2026)

Dual labour markets theory (Doeringer and Piore, 1971) holds that economies divide into a primary segment (stable jobs, high wages, benefits) and a secondary segment (insecure jobs, low wages, high turnover). Enterprise HR needs distinct workforce strategies and compliance frameworks for each segment.

What are dual labour markets?

Dual labour market theory holds that the labour market is not a single, unified system where workers compete equally for jobs. Instead, it splits into two structurally separate tiers with different wage-setting mechanisms, hiring practices, and mobility prospects. Workers in the primary market typically hold full-time, permanent roles at large employers. Workers in the secondary market cycle through temporary, part-time, or contract positions with little prospect of crossing into the primary tier.

The concept matters for enterprise HR because the two segments require fundamentally different talent acquisition, retention, and compliance strategies. A benefits package optimised for primary-market professionals does nothing to reduce secondary-market turnover. A contingent workforce programme designed for secondary-market realities cannot simply be applied to core technical roles.

Doeringer and Piore: the theory origin

Economists Peter Doeringer and Michael Piore introduced dual labour market theory in their 1971 book Internal Labor Markets and Manpower Analysis. Studying the US labour market, they observed that wages and working conditions were not determined primarily by supply and demand. Instead, institutional forces inside large firms governed how jobs were priced, filled, and structured.

Their central argument: structural barriers, not individual skill deficits, keep workers trapped in the secondary segment. Women, migrants, and minority workers were concentrated in the secondary market not because they lacked capability but because the primary market used credentials, informal networks, and internal promotion ladders to limit entry. That structural diagnosis, drawn from 1970s US data, maps closely onto gig economy dynamics in 2026 (ILO, Employment and Social Trends 2026).

Primary vs secondary labour market: key differences

The table below compares the two segments across the dimensions most relevant to workforce planning and compensation design.

Internal labour markets: how large firms create their own segment

Doeringer and Piore introduced a third concept alongside the primary/secondary split: the internal labour market (ILM). Large organisations govern their own job allocation through administrative rules rather than open-market competition. Vacancies are posted internally before external recruitment begins. Promotions follow seniority or performance criteria set by HR policy, not external wage signals.

For enterprise workforce planning, the ILM is a competitive advantage. Filling a senior engineering role internally costs significantly less than external recruitment, preserves institutional knowledge, and supports succession planning. The risk: internal mobility can calcify skill gaps if the organisation stops benchmarking internal candidates against external talent pools. Skills assessments applied at promotion decisions counteract this bias without disrupting the ILM structure.

Modern examples of dual labour markets

The primary/secondary segmentation Doeringer and Piore observed in 1971 is more visible in 2026 than ever, driven by platform work and corporate restructuring.

• Technology firms: Core software engineers and product managers sit in the primary segment with equity, bonuses, and remote flexibility. Contracted moderators, QA testers, and data labellers often work through staffing agencies on hourly rates with no benefits, constituting a secondary workforce serving the same products.
• Retail and logistics: Permanent store managers and regional directors in the primary segment; seasonal warehouse staff and gig delivery couriers in the secondary segment. The BLS Contingent Worker Supplement (July 2023) found median weekly earnings for contingent full-time workers at $838, compared to $1,137 for noncontingent workers — a 26% wage gap.
• Healthcare: Salaried physicians and permanent nursing staff in the primary segment; agency nurses and locum physicians filling critical gaps at premium day rates but without employer pension contributions.
• Financial services: Analysts on graduate schemes with structured rotations and mentoring programmes in the primary segment; compliance contractors on rolling six-month engagements in the secondary segment.

The gig economy and labour market segmentation

Platform-mediated work has expanded the secondary labour market at scale. The US independent contractor population reached 59 million in 2023, according to Statista, while the BLS is updating its Contingent Work Supplement (effective July 2026) specifically to capture digital platform work that existing measurement frameworks miss.

For HR leaders, this expansion creates three immediate workforce planning questions. First, which roles in your organisation sit in the secondary segment by design (seasonal, project-based), and which have drifted there through repeated contract renewals without strategic intent? Second, does your contingent workforce programme meet EEOC and GDPR obligations for workers who are not direct employees? Third, are you capturing the full cost of secondary-market attrition — including agency markup, lost productivity, and quality variance — when comparing contingent to permanent headcount models?

The ILO’s Employment and Social Trends 2026 report flags widening job quality inequalities despite stable headline employment. HR teams that treat secondary-market workers as purely transactional miss both the compliance exposure and the talent opportunity.

HR implications: workforce strategy across both markets

Enterprise HR functions rarely operate in a single labour market segment. The strategic question is not which market you hire from but how deliberately you manage the boundary between them.

Compensation design

Primary-market pay benchmarking against Radford or Mercer data is well-established. Secondary-market comp design is less systematic. Relying on agency bill rates as a proxy for market pay leads to overpaying for low-complexity roles or underpaying for specialist contractors. Run market analysis on your contingent roles at least annually, using job-level scope not job titles, to anchor rates to actual work outputs.

Benefits and compliance

Workers misclassified as independent contractors when they meet the economic dependence test under FLSA or the ABC test in US state law represent material legal exposure. Under GDPR, contingent workers’ personal data processed in talent systems triggers the same data subject rights as permanent employees. SOC 2 audit controls must account for contractor access to customer data systems. These are not hypothetical risks: enforcement activity on worker classification has accelerated in the EU and across US state labour agencies in 2025-2026.

Skills assessment across market segments

One structural advantage of objective skills testing is that it operates identically across both labour market segments. A cognitive ability or job-specific skills test does not carry the credential filters that reinforce primary-market entry barriers. For roles typically sourced from the secondary market, skills assessments reduce agency time-to-fill by screening at volume before interview. For primary-market hiring, assessments add structured data to decisions that otherwise rely heavily on resume signals and referral networks. The result: better hires at both ends of the spectrum, with an auditable, EEOC-defensible selection record. See how skills-based hiring removes structural barriers from your recruitment process.

Learn more about workforce planning and talent acquisition strategy in the Testlify HR glossary.

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Dual labour markets: frequently asked questions

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Frequently asked questions

What is the dual labour market theory?

Dual labour market theory, developed by Peter Doeringer and Michael Piore in 1971, holds that the labour market divides into a primary segment with stable, well-paid jobs and a secondary segment with insecure, low-wage work. Structural barriers, not individual skill gaps, prevent workers from moving freely between segments.

What is the difference between the primary and secondary labour market?

The primary labour market offers higher wages, permanent contracts, employer-funded benefits, and structured career progression. The secondary labour market is characterised by below-median pay, temporary or gig arrangements, minimal benefits, and high turnover. The BLS found a 26% median wage gap between contingent and noncontingent full-time workers in 2023.

What is an internal labour market?

An internal labour market (ILM) is the system within a large firm where jobs are filled by promoting or transferring existing employees before recruiting externally. Pay and advancement follow administrative rules set by HR policy rather than open-market competition. ILMs reduce hiring costs and retain institutional knowledge.

How does the gig economy relate to dual labour markets?

Platform-mediated gig work, independent contracting, and temp agency work all fit the characteristics of the secondary labour market: flexible for the employer, insecure for the worker, and structurally separate from primary-segment career ladders. The US independent contractor population reached 59 million in 2023, significantly expanding the secondary segment.

What are the HR compliance risks of secondary labour market hiring?

Key risks include worker misclassification under FLSA or state ABC tests, GDPR data subject rights for contractor personal data held in HR systems, and SOC 2 access control obligations when contractors touch customer data. Enforcement activity on classification has increased across EU member states and US state labour agencies through 2025-2026.

What is labour market segmentation?

Labour market segmentation is the broader concept that the labour market splits into non-competing groups divided by factors including occupation, geography, skill, demographic characteristic, or employment type. Dual labour market theory is the most studied form of segmentation, but real labour markets exhibit multiple overlapping segments rather than a clean binary.

How do dual labour markets affect compensation benchmarking?

HR teams must benchmark primary and secondary market roles separately. Using primary-market Radford or Mercer survey data to price contingent roles overestimates value; relying on agency bill rates underestimates it. Best practice is to benchmark by job scope and output complexity for each segment annually, independently of employment type.

How can skills assessments help organisations hire across both labour market segments?

Objective skills tests work identically across primary and secondary segments because they measure demonstrated capability rather than credentials or referral networks. For high-volume secondary-market roles, assessments cut time-to-fill by screening at scale before interview. For primary-market hiring, they add structured, EEOC-defensible data to decisions that otherwise rely on resume signals and informal networks.