The cost of a bad hire usually gets counted in salary—what you paid someone who didn't work out while they were part of your team. But in some cases, that’s the tip of the iceberg. Canadian managers who've made a bad hire said it cost them around 15 hours of team productivity a week, and that it took them 4.3 weeks on average to recognize the problem.
Bad hires also cost you good ones. Among the 24% of Canadian hiring managers who told Robert Half they had made a bad hire in the past two years, 56% said it contributed to someone leaving the team. Where that happened, 72% reported losing two or more people. The survey of 1,505 managers didn’t ask why those people left, or after how long, so we should be cautious about ascribing cause-and-effect, but the reason could well be that employees left as a result of the bad hire’s work ethic, personality or other traits before the individual was recognized as a problem. In fact, the mistake managers cited most when explaining why they felt they made the bad hire—failing to consider soft skills and workplace culture—describes exactly the kind of problem colleagues feel first hand and may cause them to look elsewhere.
How much does a bad hire really cost?
Start with those 15 hours a week. That's team time—work redone and gaps covered by people who already had jobs of their own. Some teams carry more of it than others. Managers in corporate legal departments reported almost 30 hours a week lost across the team, roughly double the national figure. Small businesses came out lower at a mean of 12.6 hours. While the survey did not measure the impact on individual employees, smaller teams often have fewer resources available to absorb unexpected workload increases.
What about the hire’s own output? Asked to rate the bad hire's productivity against what they expected of the role, 68% of managers put it at half or less. Only 3% said the person delivered more than 75% of what was expected.
A manager noticing that gap is one thing. Colleagues notice it too, because they're the ones picking up the slack. Goodwill and morale inevitably nosedive, a likely explanation for why so many bad hires end with someone else resigning.
Signs you’ve made a bad hire
Bad hires don’t announce themselves. Watch for the following patterns:
The same problems keep reoccurring, well past the point where onboarding should have settled them.Colleagues quietly route around the person, taking work back rather than handing it over.Your own week fills up with their problems, and you're checking work you'd normally sign off unread.Questions that belonged in week two are still arriving in week six.
5 ways to avoid a bad hire
Failure to assess soft skills and alignment with workplace culture may be the most-cited mistakes, but they aren't the only ways hiring goes wrong. Almost half (49%) of managers pointed to failing to properly assess technical skills and qualifications, while others cited overly narrow talent pools and a cavalier attitude towards reference checks. Here are 5 ways to avoid a bad hire, in the order you'd meet them in a hiring process:
1. Set realistic expectations about the role in job descriptions
Around a third of managers (33%) said failing to communicate clear job descriptions and role duties contributed to the bad hire. Draft the description with input from the people who'll work alongside the new hire, so it reflects an actual week in the role rather than an idealized version of it. Steady, repeatable work carries a lot of any role, and it's the part descriptions tend to leave out. That’s because they tend to foreground the distinctive parts of a role—strategic projects, growth opportunities—since that's what sells the job, letting the recurring, unglamorous work collapse into "other duties as assigned." Because it repeats daily, that’s also where a mismatch shows up first.
2. Look past your own postal code
Once you know what the role needs, decide where to look for it. Relying on the local candidate pool was named by 28% of managers when asked what went wrong, rising to 35% at organizations with 1,000 or more employees. A narrow pool means fewer people to compare, so the shortlist gets built from whoever applied rather than whoever might best suit the job, increasing the risk of a bad hire. Remote and hybrid arrangements, contract professionals and recruiters who specialize in the role’s professional field all widen the choices.
3. In interviews, score soft skills instead of ‘sensing’ them
Before interviews, identify the three or four behaviours the role genuinely needs (handling an unhappy client, pushing back on an unrealistic deadline, working productively without daily supervision) and write them into a scorecard. Ask every candidate the same questions, then score each answer on a simple 1–5 scale. This way you cut the risk of hiring someone who talks fluently but has no real affinity for the position.
4. Test any technical claims
Give finalists a brief skills test that resembles the work they'll do in the role. If the exercise requires a meaningful time commitment, consider paying candidates for it.
If you ask candidates to complete a technical exercise, tell them in advance whether they can use AI tools and, if so, how. Spell out what's allowed for that specific task—drafting, debugging, background research or nothing at all—and ask them to note where they used it.
5. Make the reference calls
Nearly a third (30%) of hiring managers admitted they skipped thorough reference checks when vetting candidates. It’s critical to cover with each reference such fundamentals as dates, responsibilities and performance, then ask them to describe a project where the candidate struggled and what happened next. The response often provides insight into how the individual learns, adapts and works through problems.
Avoiding bad hires is easier with a partner whose reputation depends on doing just that. A recruitment partner takes the sourcing and screening load off your team and reaches people who never apply to job ads, including candidates already in work who aren't scanning job boards.. Robert Half's Canadian recruiters can help you hire permanent staff, or place contract professionals to cover the work while a role sits open.
Frequently asked questions
How much does a bad hire cost?
More than the salary. On top of the 15 hours a week of team time, 12% of managers lost 40 hours a week or more—a full role's worth of work—before you count the spend to recruit a replacement..
How long does it take to spot a bad hiring decision?
On average, 4.3 weeks. A small number of survey respondents reported taking a full quarter.
What are the most common recruitment mistakes that lead to a bad hire?
They happen during assessment rather than sourcing: misreading soft skills and workplace culture (50%), then technical assessment (49%), unclear job descriptions (33%), skipped reference checks (30%) and a candidate pool limited to the local market (28%).
Which teams see the most bad hires?
Technology (34%) and administrative teams (33%), and large organizations (30%) more than small ones (20%). Legal and HR report the fewest at 18% each—though legal departments that did have one reported some of the heaviest team-time losses in the survey.
