diff --git a/extensions/openpower-pels/severity.cpp b/extensions/openpower-pels/severity.cpp
new file mode 100644
index 0000000..1911c12
--- /dev/null
+++ b/extensions/openpower-pels/severity.cpp
@@ -0,0 +1,54 @@
+#include "severity.hpp"
+
+namespace openpower
+{
+namespace pels
+{
+
+using LogSeverity = phosphor::logging::Entry::Level;
+
+/**
+ * @brief The major types of severity values, based on the
+ *        the left nibble of the severity value.
+ */
+enum class PELSeverityType : uint8_t
+{
+    nonError = 0x00,
+    recovered = 0x10,
+    predictive = 0x20,
+    unrecoverable = 0x40,
+    critical = 0x50,
+    diagnostic = 0x60,
+    symptom = 0x70
+};
+
+uint8_t convertOBMCSeverityToPEL(LogSeverity severity)
+{
+    uint8_t pelSeverity = static_cast<uint8_t>(PELSeverityType::unrecoverable);
+    switch (severity)
+    {
+        case (LogSeverity::Notice):
+        case (LogSeverity::Informational):
+        case (LogSeverity::Debug):
+            pelSeverity = static_cast<uint8_t>(PELSeverityType::nonError);
+            break;
+
+        case (LogSeverity::Warning):
+            pelSeverity = static_cast<uint8_t>(PELSeverityType::predictive);
+            break;
+
+        case (LogSeverity::Critical):
+            pelSeverity = static_cast<uint8_t>(PELSeverityType::critical);
+            break;
+
+        case (LogSeverity::Emergency):
+        case (LogSeverity::Alert):
+        case (LogSeverity::Error):
+            pelSeverity = static_cast<uint8_t>(PELSeverityType::unrecoverable);
+            break;
+    }
+
+    return pelSeverity;
+}
+} // namespace pels
+} // namespace openpower