Why “In-Group vs. Out-Group” Thinking Still Breaks Global Teams

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Have you ever noticed that things move fast when you work only with people from your own team.
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But the moment a project involves another department, another country, or a local partner, collaboration suddenly becomes difficult.
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– Information slows down.
– Frustration builds up.
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And without anyone saying it out loud, an invisible line appears — “us” and “them”.

I see this all the time in global projects.
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I have worked in seven countries, leading project teams made up of Japanese members and local professionals, or teams with members from multiple countries.
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Even when everyone is competent, motivated, and working toward the same goal, collaboration often breaks down in the early stages.
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Japanese team members might say:
– “They don’t respect deadlines.”
– “They don’t share information.”
– “We’re doing our part, but they aren’t.”
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At the same time, local team members say:
– “Decision-making is too slow.”
– “We don’t know what the Japanese team is really thinking.”
– “We are performing well, but they hold us back.”
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Both sides feel the same thing:
“We are doing our best. The problem is them.”
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As this mindset grows, people feel closer to their own group — and build higher walls toward others.

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What’s important to say is this:
This is not about capability, experience, or professionalism.
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“It’s human nature.”
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We feel safer with people who think like us, speak our language, and share our background.
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When uncertainty or discomfort appears, we instinctively distance ourselves from it.
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That’s why I don’t tell my teams:
– “You shouldn’t think in terms of us vs. them.”
– “Just accept the differences.”
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That kind of advice sounds right, but it ignores how people actually work.

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So what do I do instead?
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I start by focusing on key influencers in each group — not necessarily the most senior people, but those who are trusted, vocal, and central to information flow.
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Then I ask myself:
– Are they mainly protecting their own group?
– Or could they become a bridge between groups?
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If someone is strongly protecting their own side, I begin by listening — understanding their concerns and pressures.
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If someone shows potential to bridge, I quietly create opportunities for them to work with counterparts from the other side.
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Not as a formal “collaboration initiative.”
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Sometimes just a small shared task, a casual conversation, or working something out together over coffee.
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I do this carefully, because when people feel they are being pushed to collaborate, they often retreat further into their own group.
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The truth is, many global teams still deliver results without real trust or collaboration.
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So I don’t force it.
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But when people eventually feel that “them” has become part of “us,” something changes.
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They don’t just complete a project — they experience real growth, both individually and as a team.
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That may not show up on a résumé.
It may not lead to an immediate promotion and salary increase.
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Still, I want more people in global teams to experience that moment —
when working across boundaries stops feeling like a burden, and starts feeling meaningful.
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