A vacancy lands in an agency's inbox. The hirer needs someone quickly, the job description appears straightforward, and there is pressure to send suitable CVs before another supplier gets there first. For a busy staffing agency, this can feel like a familiar race against time. However, the real test of an agency is not simply how quickly it can produce candidates; it is how well it understands the assignment, verifies suitability and helps create the conditions for a successful placement. A candidate may look perfect on paper but struggle in a role if the working environment, expectations, qualifications or practical requirements have not been properly considered.
This is why due diligence matters. It is the process of obtaining relevant information, checking important details and making informed decisions before introducing or supplying a worker to a hirer. Done well, it helps reduce avoidable mismatches, supports clear communication and strengthens the relationship between the agency, worker and client.
For agencies operating in the UK, it is also connected to specific legal obligations. The UK government's guidance on the Conduct of Employment Agencies and Employment Businesses Regulations 2003, updated on 22 June 2026, explains that agencies must obtain sufficient information from hirers to select suitable work-seekers. In other words, professional recruitment should begin with understanding, not assumptions.
1. Understand the Vacancy Before Searching for Candidates
A job title is a starting point, not a complete brief. Terms such as warehouse operative, administrator, care assistant or production worker can describe positions with very different responsibilities, working environments and requirements. Before searching a database or advertising an opportunity, an agency should establish what the hirer actually needs and what the worker will be expected to do. That means clarifying the duties, location, start date, likely duration, working hours, pay-related details, required experience, qualifications, training and any known health and safety risks.
UK government guidance on information required before placing a worker with a hirer sets out information that agencies and employment businesses must obtain, including the type of work, location, working hours, relevant risks and the experience, references, training and qualifications required for the role. These are not details to leave until the worker arrives. They form part of the information needed to assess suitability in the first place.
Consider a logistics company that urgently needs temporary warehouse staff ahead of a busy trading period. If the agency receives only the job title and start date, it may identify candidates with general warehouse experience but miss important requirements. Will workers be operating particular machinery? Is manual handling involved? Are there specific shift patterns? What safety controls and protective equipment are required? Who will supervise workers on site? Asking these questions at the outset helps the agency understand the assignment rather than simply matching a job title to a CV.
The principle is simple: the quality of the placement depends partly on the quality of the information gathered before recruitment begins.
2. Verify the Candidate, Not Just the CV
Once the agency understands the role, the next task is to establish whether the candidate genuinely meets its requirements. A CV can describe previous experience, skills and qualifications, but it does not automatically verify every claim. Depending on the role, checks may include identity, employment history, references, qualifications, training, professional registration or other authorisations. The agency should also establish that the candidate is willing to undertake the position and understands what the assignment involves.
This is particularly important in regulated or safety-sensitive environments. For example, a candidate applying for a role that requires a specific professional registration cannot be considered suitable simply because their CV lists relevant experience. The required registration or authorisation needs to be checked. Where a role involves working with vulnerable people, additional requirements can apply, including specific references and qualification checks under the Conduct Regulations. Agencies should establish the requirements for the particular role rather than assume that the same screening process is appropriate for every vacancy. Our guide to DBS checks, references and background screening covers this in more detail.
Right-to-work checks are another important part of the UK recruitment process. The relevant requirements depend on the circumstances and applicable legislation, so agencies should follow current government guidance and ensure the appropriate checks are completed. They can consult GOV.UK's right-to-work checking guidance for the applicable process, and our own explainer on right-to-work checks.
Good verification is not about creating unnecessary barriers for candidates. It is about making decisions based on reliable information and identifying gaps before they become problems. If a qualification or reference cannot be obtained, the agency should understand what the relevant rules require and communicate the position accurately to the hirer. It should never present an unverified detail as though it has been confirmed.
3. Match Capability to the Actual Assignment
Recruitment technology makes it easier to search CVs, filter applicants and identify keywords. Yet a candidate who matches every keyword may not necessarily be the best fit for a particular assignment. Good matching requires the agency to consider how the candidate's experience, skills, availability and expectations align with the actual work.
Imagine two candidates applying for a temporary administrative position. Both have office experience and can use common software. However, the hirer needs someone who can manage a high volume of customer enquiries, maintain accurate records and work comfortably in a fast-paced team. One candidate's experience may be more closely aligned with those demands. A thoughtful agency will explore the relevant experience and ask targeted questions rather than assume that matching job titles means matching capability.
This is also where honest communication matters. If a candidate has transferable skills but lacks a requirement that is essential to the assignment, the agency should not overlook the gap simply to meet a deadline. It can clarify whether the requirement is genuinely essential, ask the hirer whether suitable training is available or continue searching for a candidate who meets the brief. The right decision depends on the role and its requirements, not on the pressure to submit a CV.
The UK government's guidance on protecting work-seekers and hirers explains that agencies and employment businesses must take reasonable steps to ensure that placing a work-seeker does not harm the interests of the worker or the hirer. That makes suitability more than a matter of preference: it is an important part of responsible placement. We explore this further in The Right Worker Can Still Be the Wrong Match.
4. Communicate the Assignment Clearly
Even a well-matched candidate can arrive at work with the wrong expectations if the assignment has not been explained properly. A worker who expects regular daytime hours may be unprepared for rotating shifts. Someone expecting to work at one location may be surprised to discover that the assignment involves several sites. Unclear information about duties, pay, reporting arrangements or the expected duration can quickly undermine confidence.
Agencies should communicate relevant details accurately and ensure workers understand the opportunity before agreeing to it. They should not rely on vague descriptions or assume that candidates will discover important conditions after starting. Clear information allows workers to make informed decisions and helps hirers avoid preventable misunderstandings.
In the UK, employment businesses have specific information obligations when offering assignments. Acas guidance on agency workers explains that workers should receive details such as the hiring organisation, type of work, location, working hours, assignment duration, relevant health and safety risks, required experience and training, and pay-related information. The rules specify when this information must be provided in writing.
For agencies, the professional lesson extends beyond paperwork. Communication should be accurate, timely and consistent from the initial conversation through to the worker's first day. If the assignment changes, the relevant parties should be informed and the implications clarified (see The Assignment Changed. Did Your Temporary Workers Know?). A placement is more likely to begin well when nobody has to guess what was agreed.
5. Clarify Health and Safety Responsibilities Before Work Begins
Health and safety deserves particular attention when supplying temporary or agency workers. The worker may be unfamiliar with the workplace, its equipment, its procedures and its risks. An agency should not assume that a hirer has already communicated everything necessary, nor should a hirer assume that the agency has covered every workplace-specific requirement.
The Health and Safety Executive's guidance on the roles of suppliers and end-user businesses explains that suppliers and end-user businesses need to work together to identify risks and agree suitable controls before the assignment begins. It also highlights the importance of sharing information about duties, required skills and qualifications, known risks, control measures and how workers can raise safety concerns. The day-to-day workplace responsibilities will depend on the arrangement, including who directs the work and controls the premises.
For example, an agency supplying workers to a manufacturing site should establish what information the hirer needs to provide about the work environment and its risks. The hirer, which controls the site and directs the work, will generally be best placed to manage day-to-day workplace safety. The agency must still fulfil its own applicable responsibilities and liaise with the hirer rather than treating safety as someone else's problem.
This is where clear agreements and practical communication become essential:
- Who will provide the site induction?
- What training or authorisation must be completed before particular tasks begin?
- What protective equipment is required?
- Who should the worker contact if an unsafe condition arises?
These questions should be resolved before deployment, with responsibilities clearly understood by the parties involved. Our post on who is responsible for what between agency, hirer and worker looks at this division in depth.
A worker should never be sent into an assignment on the assumption that somebody else has dealt with a known safety risk.
6. Prepare the Worker for the First Day
Due diligence should lead to practical preparation. Once a candidate has been selected, the agency can help ensure the worker knows where to report, when to arrive, who to contact and what information or documents they need. The worker should understand the assignment's duties and expectations, along with any relevant instructions received from the hirer.
Preparation does not mean that an agency must deliver every aspect of workplace induction or specialist training itself. Those responsibilities depend on the role, the arrangement and applicable requirements. Instead, the agency should make sure the necessary arrangements are understood and that the worker receives the relevant information available to it. The hirer must also fulfil its own duties, particularly where it controls the workplace, equipment, processes and day-to-day supervision (see They Started the Shift. But Were They Ready for the Job?).
This becomes especially important when placements are arranged at short notice. Urgency can encourage people to skip basic conversations, but a short, structured briefing can help prevent confusion over attendance, responsibilities and reporting lines. The aim is not to slow down recruitment; it is to avoid sending someone into a workplace without the information needed to start appropriately.
7. Follow Up and Learn From the Placement
A placement should not become invisible to the agency as soon as the worker starts. A proportionate follow-up gives the agency an opportunity to check whether the assignment reflects what was agreed, identify any emerging misunderstandings and gather feedback from the worker and hirer. The timing and method will depend on the nature and duration of the assignment, but the purpose remains the same: to identify issues early and improve future decisions.
Imagine a hirer reports that a worker is struggling with a task that was not clearly described in the original brief. Rather than treating the situation only as a candidate-performance issue, the agency can investigate whether the original requirements were sufficiently clear, whether the worker's experience was accurately assessed and whether the hirer needs to clarify the expectations. Depending on the findings, the response might involve additional communication, revised matching criteria or a different candidate for a future assignment.
There are also specific legal implications when an agency or employment business receives information suggesting that a worker may be unsuitable. The applicable duties differ according to the arrangement, and employment businesses may be required to inform the hirer, investigate and end the supply without delay where unsuitability is confirmed. Agencies should consult the Conduct Regulations guidance and seek appropriate advice when necessary.
Follow-up also creates an opportunity to build a more useful understanding of the hirer's workforce needs over time. Feedback can reveal which skills are most important, which assignment details are commonly misunderstood and what preparation would help future workers. These insights can make the agency's recruitment process more informed and consistent.
A Practical Framework: Understand, Verify, Match, Prepare, Place and Follow Up
Agencies can turn these principles into a repeatable process:
- Understand the vacancy by clarifying duties, conditions and requirements with the hirer.
- Verify the candidate's relevant experience, qualifications, authorisations and other necessary details.
- Match the candidate to the real demands of the assignment rather than relying solely on keywords.
- Prepare the worker by communicating accurate assignment information and confirming practical arrangements.
- Place the worker with clear expectations and appropriate coordination between the agency and hirer.
- Follow up to identify issues, gather feedback and improve future placements.
This framework is a practical management approach, not a substitute for legal advice or a complete statement of every statutory obligation. Agencies should check the rules applicable to their particular services and assignments. Nevertheless, it offers a useful way to connect compliance, candidate suitability and client service within one consistent workflow.
Good Due Diligence Is Good Business
There can be pressure to prioritise speed when a hirer needs someone urgently. Responsiveness matters, but a rushed placement based on incomplete information can create additional work, operational disruption and frustration for everyone involved. A candidate may leave quickly because the role differs from what they expected, or a hirer may discover that a critical requirement was never checked. Repeating the recruitment process can cost time and weaken confidence in the agency's service.
Due diligence cannot guarantee that every placement will succeed. People, workplaces and operational needs change, and even carefully considered matches can encounter unexpected challenges. However, a structured process gives agencies a stronger basis for their decisions, helps them communicate honestly and makes it easier to identify where a placement needs attention.
The objective is not simply to demonstrate that a vacancy has been filled. It is to show that the agency has taken the relevant steps to understand the requirement, assess suitability and support a clear, responsible start.
At Meet Resources, we believe staffing is about more than filling vacancies. It is about understanding the requirement, identifying the right capability, communicating expectations and building relationships that create value beyond the initial placement.
Sending a CV is easy. Making the right placement takes understanding, verification and professional judgement.
The right placement starts long before the worker walks through the door.
References and Further Reading
- GOV.UK (Department for Business and Trade): Overview of the Conduct Regulations 2003
- GOV.UK: Employment agencies and businesses, before placing a worker with a hirer
- GOV.UK: Employment agencies and businesses, protection of work-seekers and hirers
- HSE: Health and safety for gig economy, agency and temporary workers, roles of suppliers and end user businesses
- Acas: Agency workers
- GOV.UK: Checking a job applicant's right to work