What Is Agency Worker?

An agency worker is a person employed by a staffing agency and placed at a client organisation to carry out work under the client's supervision. The agency handles employment obligations — payroll, PAYE, National Insurance (UK) or FICA (US) — while the client controls day-to-day tasks. In the UK, agency workers gain the right to equal pay and conditions after 12 continuous weeks under the Agency Workers Regulations 2010.

Workforce Managementagency-workertemp-staffingcontingentAWRUpdated March 2026

TL;DR

An agency worker is a person supplied by a staffing agency to work for a hirer on a temporary basis. In the UK, the Agency Workers Regulations 2010 (AWR) grant agency workers equal treatment rights after 12 continuous weeks in the same role with the same hirer. Understanding the AWR is non-negotiable for any business that uses temporary staffing regularly.

The Three-Party Structure

Agency work involves three parties: the worker, the agency, and the end-user hirer. The worker has a contract with the agency — either a contract of employment or a contract for services. The agency has a commercial contract with the hirer. The worker has no direct employment contract with the hirer, which historically meant the hirer had limited obligations to the worker.

The AWR changed that calculus. After 12 continuous weeks in the same role for the same hirer, an agency worker is entitled to the same basic working and employment conditions they would have received had they been recruited directly. This covers pay, working hours, rest breaks, and annual leave — the core conditions. It does not cover sick pay, occupational pension, maternity pay, redundancy pay, or enhanced notice — those remain with the agency.

The 12-week clock resets in specific circumstances: the role changes substantively, there is a break of 6 or more weeks, or the worker starts an assignment with a different hirer. Attempts to structure rotations specifically to avoid the qualifying period ("the Swedish derogation" arrangement, which allowed agencies to pay workers between assignments to avoid equal pay rights) were closed in April 2020. The Swedish derogation model is no longer a lawful method of avoiding AWR equal pay rights.

Day-One Rights Under AWR

Not all AWR rights require the [12-week qualifying period](/glossary/12-week-qualifying-period). From day one, agency workers are entitled to access to collective facilities and amenities (canteen, parking, childcare, transport), and to be informed of vacancies with the hirer. These day-one rights are frequently overlooked by hirers who focus only on the 12-week equal treatment obligation.

The day-one rights matter practically: if the permanent workforce has access to an onsite gym, the agency workers do too. If the hirer advertises internal vacancies on a staff notice board, agency workers must be informed. These are not major financial exposures, but they generate tribunal claims when ignored.

Why This Matters for Staffing-Heavy Operations

Businesses that rely heavily on temporary agency workers face significant AWR-related liabilities if they have not thought through their assignment structures and pay benchmarking. The calculation is not complicated: what would a direct employee in this role earn, including any bonuses tied to personal performance? Once the agency worker hits week 12, they are entitled to that rate.

For hirers, the cost implication is usually absorbed through the agency's margin adjustment. The agency monitors the qualifying date and informs the hirer. The practical risk arises when the hirer changes the worker's role without telling the agency (resetting or not resetting the clock depending on how substantive the change is), or when the hirer makes the direct-equivalent pay calculation incorrectly.

For recruiters managing high-volume temporary programmes, AWR compliance is an operational discipline, not just a legal awareness exercise. Building AWR tracking into the vendor management system or MSP platform is the standard approach at scale.

In Practice

A food manufacturing company runs a facility with 200 permanent employees and 80 agency workers supplied by two agencies. During weeks 1-11, agency workers receive the agency's standard pay rate. At week 12, the hirer provides the agencies with the equivalent direct-hire pay and benefits data. Workers in packing roles move from £11.50/hour to £12.30/hour (the rate permanent packers receive) plus entitlement to the same shift premium schedule. The hirer absorbs this through a rate card adjustment negotiated with the agencies at the start of the year. No tribunal claims, no surprises.

A different scenario: the hirer "rotates" workers between notionally different roles every 10 weeks to avoid the qualifying period. Post-April 2020, this is directly targeted by the closure of the Swedish derogation. If the roles are substantially the same, the clock does not reset. An agency worker brings an AWR claim; tribunal upholds it; back pay awarded for 14 months.

Key Facts

ConceptDefinitionPractical Implication
Agency Workers Regulations 2010UK regulations governing equal treatment rights for agency workersApplies after 12 continuous weeks in same role with same hirer
12-Week Qualifying PeriodPeriod after which equal pay and working conditions applyClock resets on substantive role change or 6+ week break
Equal TreatmentSame basic pay and working conditions as comparable [direct hire](/glossary/direct-hire)Covers pay, hours, rest, annual leave; excludes pension, sick pay, redundancy
Day-One RightsImmediate access to collective facilities and vacancy informationApplies from start of assignment; frequently overlooked
Swedish Derogation (Closed)Former model allowing agencies to avoid equal pay by paying between assignmentsClosed April 2020; no longer a lawful method of avoiding AWR equal pay
Three-Party StructureWorker, agency, hirer — no direct contract between worker and hirerLiability split between agency and hirer depending on the obligation
AWR TrackingMonitoring of qualifying dates across agency worker populationBest managed through MSP platform or agency-managed reporting

Frequently Asked Questions

When do UK agency workers become entitled to equal pay under the AWR?
After 12 weeks of continuous service in the same role with the same hirer, an agency worker is entitled to equal treatment on basic pay, working time, rest periods, and annual leave compared to a directly employed equivalent. The clock resets if the worker takes a break of six weeks or more, starts a substantively different role, or takes certain types of leave. Agencies must track qualifying dates by individual and client assignment — a change in team or department title without a change in duties typically does not reset the clock.
What is co-employment risk for US staffing agencies and how do you manage it?
Co-employment risk arises when a client exerts enough behavioral control over a temp worker to create a joint employment relationship — setting daily schedules, disciplining workers directly, and controlling hiring decisions. This can create shared liability for wage-and-hour claims, benefits eligibility, and tax obligations regardless of what the agency contract says. Managing it means defining clear boundaries in the client service agreement: clients direct the work product; agencies handle employment decisions, discipline, and HR processes.
Can an agency worker waive their AWR rights?
No. AWR rights cannot be waived by agreement between the worker and the agency or the hirer. The most common legal arrangement used to manage AWR costs is the Swedish Derogation (officially 'pay between assignment' contracts), though this was abolished in April 2020, removing the main contractual mechanism that agencies previously used to opt out of the equal pay entitlement. Workers on qualifying assignments are entitled to equal pay regardless of what their contracts say.