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The 7 most common mistakes when hiring temporary staff and how to prevent them

Temporary staffing? Avoid these pitfalls and get more out of your collaboration Temporary staff provide organizations with the necessary flexibility and expertise during busy or specialized periods. Whether it's an IT specialist for a data migration, a recruiter for a wave of growth, or an interim project manager: external personnel are indispensable in an agile organization.

9 Juni 2025
Reading time 3 minutes
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9 Juni 2025
Reading time 3 minutes
Share this article

But… the success of temporary deployment depends heavily onhow je ermee omgaat. At Circle8 we see it daily: small mistakes in preparation, support or communication can lead to frustration, loss of productivity or even failed placements.

Therefore, in this blog we share the 7 most common mistakes when engaging temporary staff and, of course, how to prevent them.

1. Unclear assignment description
A vague request rarely leads to the right solution. Many organizations start a hiring process without a clear goal or concrete profile. The result: mismatch, noise and extra lead time.

Prevent?

  • Create a clear task and result description

  • Specify concrete goals, duration and context

  • Involve the team in formulating the question

2. Starting the search too late
De werkdruk is hoog, dus het inhuurverzoek komt pas als het al “gisteren geregeld” moet zijn. Maar specialistisch talent is schaars, en goede profielen zijn vaak niet per direct beschikbaar.

Prevention?

  • Plan ahead for known projects or peaks

  • Work with a flexible talent pool via your staffing agency.

  • Align hiring strategies with your recruitment partner in a timely manner

3. Focusing too much on the rate, too little on quality
Budget is important, but basing decisions solely on price rarely leads to sustainable results. Cheap can sometimes be a false economy, especially if a professional doesn't perform or leaves prematurely.

Prevention?

  • Determine in advance what the assignment is really worth

  • Look at experience, fit, knowledge and impact

  • Trust the expertise of your secondment partner when weighing

4. No attention to onboarding
An interim professional may be experienced, but without a good introduction it always takes longer to settle in. Poor onboarding leads to misunderstandings, delays and lower engagement.

Prevent?

  • Ensure access to systems and tools on day 1

  • Plan a warm welcome and a tour

  • Appoint a contact person or buddy

Extra benefit: a good onboarding also increases the likelihood that a professional will want to return for a subsequent assignment.

5. Do not involve the external in the team
"They're only temporary, aren't they?", it is a thought that does more harm than good. External contractors who feel excluded, perform less well, and that is no one's gain.

Prevent?

  • Involve temporary staff in meetings and celebrate successes together

  • Give appreciation and recognition, just like with internal employees

  • Make clear what the role is within the team and project

6. No interim evaluation
Many organizations place someone and only look back when it's finished. But if something starts to go wrong halfway through, you're too late to course-correct.

Prevention?

  • Schedule regular feedback sessions with the external party and the agency

  • Actively ask about what is going well and what can be improved

  • If necessary, bring in coaching or extra support.

7. No knowledge retention upon departure
The assignment has been successfully completed, but then the external person leaves and with him or her all knowledge, documentation and best practices. Missed opportunity.

Prevention?

  • Schedule handover moments in a timely manner

  • Have documentation requirements recorded at the start of the assignment

  • Ensure handover sessions or knowledge sharing with the team

Pro tip: integrate knowledge transfer as part of the assignment definition.

With the right approach temporary deployment becomes a lasting added value
Temporary staff is more than a short-term solution; it is a strategic means to keep your organization agile, skilled and future-proof. But you do need to set up the collaboration properly.

Circle8 helps clients in IT and recruitment professionalize temporary staffing: with a sharp intake, good guidance and long-term partnerships.