diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/CHANGELOG.md b/sdk/formrecognizer/Azure.AI.FormRecognizer/CHANGELOG.md
index dcb4c432f480b..840087b438dbc 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/CHANGELOG.md
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/CHANGELOG.md
@@ -27,6 +27,7 @@
 - In preparation for service-side changes, `FieldValue.AsInt32` has been replaced by `FieldValue.AsInt64`, which returns a `long`.
 - The order of the values for `USReceiptType` have changed so that `Other` has now a value of `1`.
 - Parameter `useTrainingLabels` is now required for `FormTrainingClient.StartTraining`.
+- Protected constructors have been removed from `Operation` types, such as `TrainingOperation` or `RecognizeContentOperation`.
 
 ### New Features
 
diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/CopyModelOperation.cs b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/CopyModelOperation.cs
index 0d15d37b21f25..2b3795da67660 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/CopyModelOperation.cs
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/CopyModelOperation.cs
@@ -116,14 +116,6 @@ internal CopyModelOperation(ServiceRestClient serviceClient, ClientDiagnostics d
             Id = string.Join("/", substrs, substrs.Length - 3, 3);
         }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="CopyModelOperation"/> class.
-        /// </summary>
-        protected CopyModelOperation()
-        {
-        }
-
-
         /// <inheritdoc/>
         public override Response GetRawResponse() => _response;
 
diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeContentOperation.cs b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeContentOperation.cs
index 10d3aecf7d358..ce275c0485857 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeContentOperation.cs
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeContentOperation.cs
@@ -68,13 +68,6 @@ internal RecognizeContentOperation(ServiceRestClient serviceClient, string opera
             Id = operationLocation.Split('/').Last();
         }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="RecognizeContentOperation"/> class.
-        /// </summary>
-        protected RecognizeContentOperation()
-        {
-        }
-
         /// <inheritdoc/>
         public override Response GetRawResponse() => _response;
 
diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeCustomFormsOperation.cs b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeCustomFormsOperation.cs
index 8b7124e116fcd..5a30036618476 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeCustomFormsOperation.cs
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeCustomFormsOperation.cs
@@ -114,13 +114,6 @@ public RecognizeCustomFormsOperation(string operationId, FormRecognizerClient cl
             Id = operationId;
         }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="RecognizeCustomFormsOperation"/> class.
-        /// </summary>
-        protected RecognizeCustomFormsOperation()
-        {
-        }
-
         /// <inheritdoc/>
         public override Response UpdateStatus(CancellationToken cancellationToken = default) =>
             UpdateStatusAsync(false, cancellationToken).EnsureCompleted();
diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeReceiptsOperation.cs b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeReceiptsOperation.cs
index 6fe938291d678..7b14c15f8c894 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeReceiptsOperation.cs
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/RecognizeReceiptsOperation.cs
@@ -70,13 +70,6 @@ internal RecognizeReceiptsOperation(ServiceRestClient serviceClient, string oper
             Id = operationLocation.Split('/').Last();
         }
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="RecognizeReceiptsOperation"/> class.
-        /// </summary>
-        protected RecognizeReceiptsOperation()
-        {
-        }
-
         /// <inheritdoc/>
         public override ValueTask<Response<RecognizedReceiptCollection>> WaitForCompletionAsync(CancellationToken cancellationToken = default) =>
             this.DefaultWaitForCompletionAsync(cancellationToken);
diff --git a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/TrainingOperation.cs b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/TrainingOperation.cs
index 010e883bdb078..b3ed982221709 100644
--- a/sdk/formrecognizer/Azure.AI.FormRecognizer/src/TrainingOperation.cs
+++ b/sdk/formrecognizer/Azure.AI.FormRecognizer/src/TrainingOperation.cs
@@ -53,13 +53,6 @@ public override ValueTask<Response<CustomFormModel>> WaitForCompletionAsync(Canc
         public override ValueTask<Response<CustomFormModel>> WaitForCompletionAsync(TimeSpan pollingInterval, CancellationToken cancellationToken = default) =>
             this.DefaultWaitForCompletionAsync(pollingInterval, cancellationToken);
 
-        /// <summary>
-        /// Initializes a new instance of the <see cref="TrainingOperation"/> class for mocking.
-        /// </summary>
-        protected TrainingOperation()
-        {
-        }
-
         internal TrainingOperation(string location, ServiceRestClient allOperations)
         {
             _serviceClient = allOperations;