Hiring in advertising and marketing often rewards people who can speak fluently about work before it verifies whether they can actually do it. That is not an argument against strong communication. Client-facing industries need people who can present, explain, persuade, and build trust. But interviews regularly blur two different capabilities: the ability to talk well in a professional setting, and the ability to produce sound work under real constraints.

Work samples can help separate them.

For employers, portfolios, writing samples, case discussions, practical exercises, and structured reviews of past work often provide better evidence of judgment than interview chemistry alone. For candidates, they can create a fairer opportunity to demonstrate what they know, especially when a polished interview style may not fully reflect their strengths. In fields where output matters deeply, strategy, messaging, analysis, research synthesis, creative development, media reasoning, stakeholder communication, and decision-making, evidence of actual work is often more useful than confidence in conversation.

That does not mean every role should require an elaborate test, nor that interviews are unimportant. It means organizations should be more disciplined about what they are trying to evaluate, and candidates should understand how to present their work in ways that reveal real contribution.

Why interviews often overvalue polish

Most hiring managers know interviews have limitations, but many organizations still rely on them too heavily. The Society for Human Resource Management has noted that unstructured interviews are especially vulnerable to inconsistency and bias, while structured interviews tend to improve reliability and comparability across candidates. The problem is not that conversation has no value. It is that casual or loosely managed interviews can reward familiarity, charisma, speed, and confidence more than evidence.

That matters in advertising and marketing because many roles involve performance in meetings. A candidate who speaks clearly, tells a compelling story, and appears poised may seem like a strong hire. Sometimes that instinct is correct. Sometimes it is not. Someone may present themselves well yet struggle to write a precise brief, interpret research carefully, frame a media recommendation, manage revisions, or make sound tradeoffs under deadline pressure.

The reverse is also true. A candidate may be less polished in an interview but excellent at the work itself. They may need a little more time to think, may be more reserved with senior interviewers, or may not be as practiced in self-promotion. That should not automatically count against them, particularly for roles where the core requirement is disciplined output rather than verbal charm.

This is one reason many employers use work sample tests. Industrial and organizational psychology research has long found that work sample measures tend to have strong predictive value because they assess behavior closely related to the job itself. The U.S. Office of Personnel Management, for example, describes work sample assessments as useful because they require candidates to perform tasks similar to those they would encounter on the job. In other words, they test demonstrated capability rather than inferred potential alone.

What work samples reveal that interviews may miss

A strong work sample does more than show whether someone can produce something attractive. It can reveal how they think, what they prioritize, how they handle ambiguity, and whether they understand audience and objective.

In advertising and marketing, useful samples vary by role:

• A strategist’s brief, insight synthesis, positioning document, or annotated case discussion can show whether they can define a problem and make choices.
• A copywriter’s writing samples can reveal clarity, range, tone control, audience awareness, and editing discipline.
• A media professional’s planning rationale, channel recommendation, or optimization case can show business reasoning beyond platform vocabulary.
• An analyst or researcher’s report can reveal whether they distinguish observation from interpretation and avoid overstating conclusions.
• An account or client services candidate’s sample communications, scopes, timelines, or problem-resolution examples can show judgment, clarity, and expectation management.
• A creative candidate’s portfolio can demonstrate craft, but the case framing around the work often shows whether they understand objectives, constraints, collaboration, and outcomes.

The most valuable evidence usually comes from the combination of artifact and explanation. A finished deliverable alone can be misleading. Great work may have been shaped heavily by a manager, partner, or client. Modest-looking work may reflect excellent judgment within strict legal, budgetary, or operational constraints. Asking candidates to discuss the assignment, their role, the tradeoffs, what changed, and what they would do differently often produces more insight than asking whether they are “a strategic thinker” or “a natural leader.”

Strong work-sample review is especially good at surfacing professional judgment. It shows whether a person can make choices when the answer is not obvious, whether they understand the difference between preference and purpose, and whether they can connect recommendations to evidence.

What strong hiring practice looks like

Organizations get the most value from work samples when they use them intentionally rather than as an add-on hurdle.

First, the sample should match the work. If a role involves writing client emails, synthesizing research, reviewing creative against strategy, or building a media recommendation, the assessment should reflect that reality. Asking candidates to do unrelated puzzle exercises or broad speculative campaigns may create noise rather than clarity.

Second, employers should be clear about what is being evaluated. Are they assessing technical skill, strategic reasoning, communication, prioritization, editing, or collaboration? Candidates should know the purpose of the exercise, the expected time commitment, the format, and the evaluation criteria.

Third, review should be structured. If three interviewers assess a sample, they should use similar criteria. Otherwise the organization simply replaces one subjective process with another. Clear rubrics help reviewers distinguish among core dimensions such as:

• Understanding of the business or communication problem
• Relevance to the intended audience
• Quality of reasoning and prioritization
• Clarity and organization
• Use of evidence or appropriate assumptions
• Judgment under stated constraints
• Professionalism of execution

Fourth, samples should be proportionate to the seniority and scope of the role. An entry-level coordinator should not face the same take-home burden as a senior strategist or research lead. At the same time, seniority should not exempt candidates from demonstrating thinking. More experienced candidates may reasonably be assessed through deeper case discussion of past work rather than longer assignments.

Finally, employers should remember that interviews still matter. The point is not to eliminate conversation but to improve what the conversation is about. Work samples create a better basis for substantive discussion: Why did you choose this? What alternatives did you rule out? What was the hardest stakeholder issue? What evidence changed your view? Those questions are usually more revealing than generic prompts about strengths and weaknesses.

Fairness depends on design, not just intent

Many organizations say they value fair hiring, then use evaluation methods that depend heavily on insider knowledge, spare time, presentation style, or willingness to perform unpaid labor. Work samples can reduce some forms of bias, but only if they are designed carefully.

A fair sample does not assume candidates have unlimited evening hours, expensive software access, proprietary datasets, or prior exposure to a specific agency’s internal language. It does not reward whoever is most willing to overinvest unpaid time. It should be possible to complete with the information provided and within a reasonable period.

The sample should also account for confidentiality. Many professionals in agencies, brands, media organizations, research firms, and consultancies cannot share detailed client information or internal documents. Hiring managers should not mistake discretion for lack of experience. Candidates should be invited to redact, anonymize, summarize, or discuss work at an appropriate level without violating obligations to current or former employers.

Fairness also means recognizing that not all strong candidates maintain polished public portfolios. This is especially true in research, analytics, account management, operations, in-house strategy, and regulated industries where much of the work is internal or confidential. Employers that insist on flashy public artifacts may inadvertently exclude capable people whose work is substantive but less visible.

That is one reason alternative formats matter. A candidate might bring a redacted brief, a de-identified slide deck, a writing sample, a campaign postmortem, an analysis memo, or a structured verbal walkthrough of a completed project. The goal is evidence of capability, not a specific aesthetic of self-presentation.

The line between assessment and free labor

One of the most common objections to work samples is also one of the most legitimate: some employers use them badly.

Candidates are right to be wary when an assignment looks less like assessment and more like unpaid project work. Asking applicants to create campaign ideas for a live client, write launch copy that could plausibly be used, build a detailed media plan for an active business problem, or conduct unpaid strategic analysis that substitutes for staff work is difficult to defend professionally. It raises ethical concerns, damages employer reputation, and can disproportionately burden people who are already employed or juggling caregiving responsibilities.

A better standard is simple: the exercise should evaluate how a candidate works without creating material value the employer could use in place of paid labor.

That usually means one of the following:

• Use a fictional business scenario.
• Use an old, already resolved case.
• Use a narrowly scoped prompt designed to reveal reasoning, not to generate production-ready output.
• Discuss past work instead of assigning new work.
• Pay candidates when the exercise requires substantial time or resembles billable professional effort.

Compensation for job tryouts is not just a courtesy in some circumstances. The U.S. Department of Labor distinguishes between legitimate pre-employment testing and work that must be compensated under the Fair Labor Standards Act, depending on whether the individual is performing productive work for the employer. Employers should be careful here, both legally and ethically. Even when a test is technically permissible, that does not make it good practice if it imposes excessive unpaid effort.

For hiring managers, this is also a quality issue. Overly large assignments often do not produce better information. They frequently measure who had the most free time, who was most desperate for the job, or who was most willing to treat the hiring process as unpaid client service.

Choosing the right type of sample

Different forms of assessment reveal different things. The best choice depends on the role.

Portfolios

Portfolios are useful when the finished work itself matters and can be reviewed meaningfully. Creative, design, content, and some strategy roles benefit from them. But portfolios are strongest when accompanied by context. Hiring managers should ask what the brief was, who the audience was, what constraints mattered, what the candidate personally contributed, and how the work performed if outcomes are known.

A portfolio without discussion can reward aesthetics over judgment. A portfolio discussion can reveal both.

Writing samples

Writing is a core professional skill across more roles than many organizations acknowledge. Account leads, strategists, researchers, marketers, media professionals, analysts, and executives all depend on clear written communication. A writing sample can reveal whether someone can structure thought, adjust tone, support recommendations, and make complicated material understandable.

This is particularly valuable because weak writing often creates downstream inefficiency: unclear briefs, vague emails, muddled decks, poorly framed requests, and confusing recommendations all slow teams down.

Case discussions

A discussion of past work is often one of the most efficient and fair assessment methods, especially for experienced professionals. It allows interviewers to probe for decision-making, tradeoffs, stakeholder management, and learning without requiring unpaid production. It also makes exaggeration harder. Candidates who only know the headline version of a project usually struggle when asked about inputs, constraints, revisions, objections, sequencing, or what happened when the original plan met reality.

Practical exercises

A short practical exercise can be effective when it mirrors the real job closely. For example, candidates might edit a weak brief, prioritize channel options based on a stated goal, respond to a client scenario, identify issues in a research summary, or rewrite confusing copy for a different audience.

The key is scope. The exercise should test thought process and execution under realistic limits, not demand a full strategic deliverable.

What candidates should demonstrate

Candidates sometimes assume a work sample speaks for itself. Usually it does not. The strongest candidates know how to explain their work with specificity and restraint.

That means being clear about:

• The problem to be solved
• The business, brand, or audience context
• The constraints, such as budget, timeline, legal limits, or stakeholder dynamics
• Their exact role
• The key decisions they made or influenced
• Why those decisions were reasonable at the time
• What changed during the process
• What outcomes were measured, if available
• What they learned

This kind of explanation does two useful things. It gives credit accurately, and it demonstrates mature professional judgment. Hiring managers are not just looking for polished outcomes. They are looking for signs that a candidate understands causation, collaboration, compromise, and accountability.

Candidates should also avoid two common mistakes. The first is inflating ownership. Saying “I led the strategy” when the truth is “I contributed research inputs and wrote sections of the brief” may sound stronger in the moment, but it often collapses under follow-up questions. The second is narrating only success. Professionals become more credible when they can explain what was difficult, what did not work initially, and how they adjusted.

What managers should listen for

When reviewing samples or discussing prior work, strong managers listen for more than polish. They pay attention to evidence of professional habits that matter after hiring.

Useful signals include whether the candidate can define the actual problem rather than describing activity, whether they can separate data from interpretation, whether they understand audience and objective, whether they can discuss tradeoffs without defensiveness, and whether they can explain collaboration honestly.

Weak signals are also instructive. If a candidate cannot explain why a recommendation made sense, dismisses all revisions as interference, attributes every success solely to themselves, or relies on jargon in place of reasoning, the concern is not merely style. It may indicate limited judgment or low self-awareness.

This is especially important for leadership and management roles. Senior candidates should be able to discuss not only what they produced but how they set direction, reviewed others’ work, resolved disagreements, protected standards, and helped teams make better decisions. A senior portfolio that shows only finished output without managerial context may not tell an employer much about actual leadership capability.

Work samples are not bias-proof

It is worth being cautious about overstating the objectivity of samples. Reviewers can still be influenced by prestige signals, familiarity with a style of presentation, or assumptions about what “good” looks like. A polished deck from a famous agency may receive more benefit of the doubt than a less polished but strategically sound document from a smaller organization. Reviewers may favor work that resembles their own methods rather than work that is fit for purpose.

That is why calibration matters. Hiring teams should define what they value before reviewing submissions. They should ask whether the sample demonstrates the capabilities needed in the role, not whether it mirrors the team’s preferred format or the reviewer’s personal taste. When possible, multiple reviewers should assess work independently before discussing it together.

Some organizations also use structured scoring guides to reduce halo effects. That will not eliminate bias, but it can improve discipline. The broader point is that better evidence still requires better evaluation.

How this changes by career stage

Early-career candidates often have limited formal work to show. That does not make work-sample hiring inappropriate. It means employers should widen the definition of valid evidence. Coursework, student media, internships, freelance projects, campus organizations, research papers, spec assignments clearly labeled as such, and volunteer communications work can all be useful if discussed honestly and evaluated in context.

For mid-career professionals, the main challenge is usually attribution. As responsibilities grow, work becomes more collaborative and less individually visible. Employers should focus less on whether the candidate personally produced every artifact and more on whether they can explain decisions, influence, review standards, and outcomes.

For senior hires, a sample should reveal judgment at scale. That may include how they shaped direction, handled ambiguity, allocated resources, improved weaker work, communicated with executives or clients, and made decisions when evidence was incomplete. Seniority should change the nature of the sample, not eliminate the need for one.

A better conversation about merit

There is a larger professional issue underneath this topic. In many organizations, “good in interviews” becomes a proxy for competence because it is fast, socially comfortable, and familiar. But speed and familiarity are not the same as rigor. If employers want stronger hires, they need evidence that is closer to the work itself.

That does not require turning every hiring process into a gauntlet of tasks. It requires a more disciplined balance: structured interviews, relevant work samples, clear criteria, reasonable scope, respect for candidate time, and a firm boundary against speculative labor.

For candidates, this shift is also healthy. It places more value on the ability to think, write, make judgments, and explain real work accurately. Those are durable professional skills. Interview presence still matters, particularly in client-facing industries, but it should not be mistaken for the whole job.

In advertising, marketing, media, research, branding, and creative work, professional capability is not best measured by who sounds most impressive in a conference room. It is better measured by who can show how they think, what they made, why they made it that way, and what happened next. That is the evidence hiring should take most seriously.