diff --git a/source/eventcore/drivers/posix/epoll.d b/source/eventcore/drivers/posix/epoll.d
index b6a5767..1abb020 100644
--- a/source/eventcore/drivers/posix/epoll.d
+++ b/source/eventcore/drivers/posix/epoll.d
@@ -57,7 +57,16 @@ final class EpollEventLoop : PosixEventLoop {
 				if (evt.events & EPOLLOUT) notify!(EventType.write)(fd);
 			}
 			return true;
-		} else return false;
+		} else {
+			// NOTE: In particular, EINTR needs to cause true to be returned
+			//       here, so that user code has a chance to handle any effects
+			//       of the signal handler before waiting again.
+			//
+			//       Other errors are very likely to to reoccur for the next
+			//       loop iteration, so there is no value in attempting to
+			//       wait again.
+			return ret < 0;
+		}
 	}
 
 	override void dispose()
diff --git a/source/eventcore/drivers/posix/kqueue.d b/source/eventcore/drivers/posix/kqueue.d
index 3692e83..800f4b9 100644
--- a/source/eventcore/drivers/posix/kqueue.d
+++ b/source/eventcore/drivers/posix/kqueue.d
@@ -85,7 +85,16 @@ abstract class KqueueEventLoopBase : PosixEventLoop {
 				// EV_SIGNAL, EV_TIMEOUT
 			}
 			return true;
-		} else return false;
+		} else {
+			// NOTE: In particular, EINTR needs to cause true to be returned
+			//       here, so that user code has a chance to handle any effects
+			//       of the signal handler before waiting again.
+			//
+			//       Other errors are very likely to to reoccur for the next
+			//       loop iteration, so there is no value in attempting to
+			//       wait again.
+			return ret < 0;
+		}
 	}
 
 	override void dispose()
diff --git a/source/eventcore/drivers/posix/select.d b/source/eventcore/drivers/posix/select.d
index dabc491..60a8380 100644
--- a/source/eventcore/drivers/posix/select.d
+++ b/source/eventcore/drivers/posix/select.d
@@ -65,7 +65,16 @@ final class SelectEventLoop : PosixEventLoop {
 					notify!(EventType.status)(fd);
 			});
 			return true;
-		} else return false;
+		} else {
+			// NOTE: In particular, EINTR needs to cause true to be returned
+			//       here, so that user code has a chance to handle any effects
+			//       of the signal handler before waiting again.
+			//
+			//       Other errors are very likely to to reoccur for the next
+			//       loop iteration, so there is no value in attempting to
+			//       wait again.
+			return ret < 0;
+		}
 	}
 
 	override void dispose()