diff --git a/phosphor-regulators/src/actions/action.hpp b/phosphor-regulators/src/actions/action.hpp
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+/**
+ * Copyright © 2019 IBM Corporation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#pragma once
+
+#include "action_environment.hpp"
+
+namespace phosphor
+{
+namespace power
+{
+namespace regulators
+{
+
+/**
+ * @class Action
+ *
+ * Action to execute.
+ *
+ * All regulator actions are derived from this abstract base class.
+ *
+ * Actions are executed to perform regulator operations, such as configuring a
+ * regulator or reading sensor values.
+ */
+class Action
+{
+  public:
+    // Specify which compiler-generated methods we want
+    Action() = default;
+    Action(const Action&) = delete;
+    Action(Action&&) = delete;
+    Action& operator=(const Action&) = delete;
+    Action& operator=(Action&&) = delete;
+    virtual ~Action() = default;
+
+    /**
+     * Executes this action.
+     *
+     * Throws an exception if an error occurs and the action cannot be
+     * successfully executed.
+     *
+     * @param environment Action execution environment.
+     * @return A boolean value whose meaning is defined by the action type.  For
+     *         example, CompareByteAction returns true if the actual register
+     *         value matches the expected value.  The return value does NOT
+     *         indicate if the action was successfully executed.
+     */
+    virtual bool execute(ActionEnvironment& environment) = 0;
+};
+
+} // namespace regulators
+} // namespace power
+} // namespace phosphor