What Are the Most Common Mistakes New Managers Make?

What are common mistakes that new or inexperienced managers make? What are three things (more or less) you would have done differently managing your team during your first few weeks on the job (i.e. politics, control, motivation, etc.)?

Answer by Ian McAllister, general manager at Amazon.

Below are some mistakes I made as a new manager or have seen other new managers make. Experienced managers still make some of these mistakes, though hopefully fewer.

Performance management

Being slow to deal with performance issues: Smoke becomes fire. If you take note of performance issues early, you can give gentle, corrective feedback. If you’re too slow to notice, you’ll have to give stronger feedback, and the performance issues may be harder to reverse.

Not documenting poor performance: Documenting poor performance via email helps employees understand the gravity of the situation (“This email summarizes the discussion we just had”), and it is also helpful to have on hand if it comes time to terminate the employee.

Not documenting good performance: Documenting good performance via email, to the employee alone or to a wider audience, is a great way to recognize their contributions to the team and company. It’s also a good habit to regularly document good performance of team members for your own purposes, so you can remember what you want to praise them for at annual review time.

Career development

Not getting to know your employees: It’s great to know the names of all your employees’ kids. It’s even better to know the type of work each employee most likes to do, their particular pain points within the team or company, what their career objectives are (depth, breadth, management) or why they might be thinking about taking a different job or moving to a different company. You need to develop a rapport and level of trust with employees before they’ll start to share these things with you.

Not paying attention to your high-performing employees: If you’re very satisfied with how an employee is performing, you need to turn the tables and invest in making him or her more satisfied with their job. Find ways for them to do more of what makes them happy and less of what doesn’t.

Not investing in employee development: Every employee needs to be developed, either to support the career development (and retention) of strong performers, or to improve the performance of weaker employees. Every year you should try to raise every employee’s performance level.


Thinking too small: A successful leader is going to create growth and opportunity for their team. A leader who thinks small is unlikely to do either. Instead of planning how to grow your business 100%, plan how to grow it 10x or 100x.

Not explicitly allocating resources: Explicitly managing resources means prioritizing projects, specifying how many (or which) resources will work on each, and in what order. Highly effective teams may be able to self-organize extremely well. New managers often give less effective teams too much freedom to self-organize, leading to sub-optimal resource allocation.

Poor delivery of unpopular decisions: How employees receive unpopular decisions often depends on how those decisions are delivered. The more important — or more unpopular — the decision, the greater the need to manage its delivery. In my experience, the best way to deliver unpopular decisions is at a team meeting where you have ample time to explain the reasoning behind the decision and take Q&A. Good managers explain why the decision is made. Bad managers say, “Because the boss said so.”

Being slow to resolve team pain points: New managers don’t pay attention to or understand their team’s pain points. Good managers are always tracking their team’s pain points, devising strategies to reduce or resolve them and then moving on to the next pain point.

Read more: What Are the Most Common Mistakes New Managers Make?


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