diff --git a/Reconstruction/egamma/egammaAlgs/ATLAS_CHECK_THREAD_SAFETY b/Reconstruction/egamma/egammaAlgs/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..2d96d66f5021fffc7089f8813c45d5d93c8c6a4b
--- /dev/null
+++ b/Reconstruction/egamma/egammaAlgs/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Reconstruction/egamma/egammaAlgs
diff --git a/Reconstruction/egamma/egammaRecEvent/egammaRecEvent/ATLAS_CHECK_THREAD_SAFETY b/Reconstruction/egamma/egammaRecEvent/egammaRecEvent/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..98ea5ea3f1ca7c37435867c2b2ada3479ad9f5eb
--- /dev/null
+++ b/Reconstruction/egamma/egammaRecEvent/egammaRecEvent/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Reconstruction/egamma/egammaRecEvent
diff --git a/Reconstruction/egamma/egammaTools/ATLAS_CHECK_THREAD_SAFETY b/Reconstruction/egamma/egammaTools/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..415745c0a7206151ca37cbb1fb51d361281244fe
--- /dev/null
+++ b/Reconstruction/egamma/egammaTools/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Reconstruction/egamma/egammaTools
diff --git a/Reconstruction/egamma/egammaUtils/egammaUtils/ATLAS_CHECK_THREAD_SAFETY b/Reconstruction/egamma/egammaUtils/egammaUtils/ATLAS_CHECK_THREAD_SAFETY
new file mode 100644
index 0000000000000000000000000000000000000000..fc8a38a5197ea2491a3543afc4cf27c22abfa01f
--- /dev/null
+++ b/Reconstruction/egamma/egammaUtils/egammaUtils/ATLAS_CHECK_THREAD_SAFETY
@@ -0,0 +1 @@
+Reconstruction/egamma/egammaUtils