My manager just pings me via IM when he gets up on what the status of my current work is. And I respond when I start working (he usually starts an hour before

My manager just pings me via IM when he gets up on what the status of my current work is. And I respond when I start working (he usually starts an hour before me). I'm more senior at my company, so when I notice more junior people get on I like to ping them via IM to make sure they aren't having any problems with what they're working on.