For a lot of adults, work is the single biggest source of repeated contact in the week, which makes it a natural place for friendships to start. It is also a place where the wrong move can feel awkward for months. Here is how to do it without it getting weird.
Why work is such fertile ground
Work quietly supplies the exact conditions friendship needs: the same people, day after day, around a shared task. That repetition is powerful. The mere exposure effect means that seeing the same colleagues regularly tends to increase liking on its own, which is why coworkers so often drift into friendship with barely any effort. You are handed the familiarity for free.
The catch about work hours
There is an important wrinkle, though. Jeffrey Hall's University of Kansas research found that time spent purely working together counts for much less than genuine social time for building friendship. Sitting in the same meetings does not bank the same kind of hours as actually hanging out. So the move is to convert some of that work proximity into real social time, however small.
Small conversions that work
You do not need grand gestures. Eat lunch with people instead of at your desk. Say yes to the after-work drink. Be the one who suggests grabbing a coffee, or walking to get lunch, or debriefing a rough day. Ask a genuine question about someone's life outside the job, the recital, the trip, the weekend, and remember the answer. Each of these steps out of the transactional work frame into a personal one, which is exactly what turns a colleague into a friend.
How to keep it from getting weird
The awkwardness people fear usually comes from moving too fast or ignoring context. Keep early invitations low-stakes and easy to decline: a group lunch is safer than an intense one-on-one on day one. Read the person's response and do not push if they seem hesitant. Be mindful of power dynamics, since a manager inviting a report needs extra care to keep it pressure-free. And keep work gossip and oversharing out of it early on, because trust at work is built slowly and lost fast.
Do not rely on work alone
Here is the cautionary note that saves people real pain. Work friendships feel sturdy while you share the job, but many of them are propped up almost entirely by the daily proximity. When someone leaves, or you do, a surprising number quietly fade. So enjoy and build work friendships, and also build some outside of work, so that a job change does not wipe out your entire social world in a single week. Treat work as one setting among several, not the whole thing.
What people find
In practical discussions this comes up often. Across a Mumsnet thread on adult friendship, several posters note that work was where they met people most easily, precisely because of the constant contact, while also acknowledging that keeping those friendships going after leaving a job took deliberate effort. The proximity starts it; intention keeps it.
The move this week
Reading whether a colleague wants more
Not every coworker is looking for a friend, and that is fine. Watch for the ordinary signals: do they linger to chat, ask about your life outside work, say yes to the group lunch, follow up on things you mentioned? Those are green lights to gently invest more. If someone keeps things strictly professional, take the hint without offense and spread your warmth to the colleagues who reciprocate. Reading the room at work is the same skill as anywhere else, just with the added care that you still have to collaborate with these people tomorrow.
If you want one concrete step, invite a colleague you like to lunch, just the two of you or a small group, this week. It is the smallest possible conversion of work time into social time, and it is where most work friendships actually begin. For keeping those ties alive if you or they move on, see making friends after changing careers or jobs, and for getting comfortable with the invitation itself, read how to ask someone to hang out without it being awkward. Building a social life beyond the office is the whole point of How to Make Friends as a Grown-Up.
Want the full, step-by-step version?
Everything here is drawn from How to Make Friends as a Grown-Up and its four companions: the plan, the message vault, reading the room, and deepening friendships.
See the books