diff --git a/src/backends/backendsCommon/test/layerTests/FillTestImpl.cpp b/src/backends/backendsCommon/test/layerTests/FillTestImpl.cpp
index 00a185c..64970fe 100644
--- a/src/backends/backendsCommon/test/layerTests/FillTestImpl.cpp
+++ b/src/backends/backendsCommon/test/layerTests/FillTestImpl.cpp
@@ -67,4 +67,9 @@
 template LayerTestResult<armnn::ResolveType<armnn::DataType::Float16>, 4>
 SimpleFillTest<armnn::DataType::Float16>(
     armnn::IWorkloadFactory& workloadFactory,
+    const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
+
+template LayerTestResult<armnn::ResolveType<armnn::DataType::Signed32>, 4>
+SimpleFillTest<armnn::DataType::Signed32>(
+    armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager);
\ No newline at end of file
diff --git a/src/backends/cl/ClLayerSupport.cpp b/src/backends/cl/ClLayerSupport.cpp
index 9c0cf61..44da423 100644
--- a/src/backends/cl/ClLayerSupport.cpp
+++ b/src/backends/cl/ClLayerSupport.cpp
@@ -32,6 +32,7 @@
 #include "workloads/ClDequantizeWorkload.hpp"
 #include "workloads/ClDivisionFloatWorkload.hpp"
 #include "workloads/ClExpWorkload.hpp"
+#include "workloads/ClFillWorkload.hpp"
 #include "workloads/ClFloorFloatWorkload.hpp"
 #include "workloads/ClFullyConnectedWorkload.hpp"
 #include "workloads/ClGatherWorkload.hpp"
@@ -428,6 +429,14 @@
     }
 }
 
+bool ClLayerSupport::IsFillSupported(const TensorInfo&,
+                                     const TensorInfo&,
+                                     const FillDescriptor&,
+                                     Optional<std::string&>) const
+{
+    return true;
+}
+
 bool ClLayerSupport::IsFloorSupported(const TensorInfo& input,
                                       const TensorInfo& output,
                                       Optional<std::string&> reasonIfUnsupported) const
diff --git a/src/backends/cl/ClLayerSupport.hpp b/src/backends/cl/ClLayerSupport.hpp
index 67fd230..d3c3295 100644
--- a/src/backends/cl/ClLayerSupport.hpp
+++ b/src/backends/cl/ClLayerSupport.hpp
@@ -108,6 +108,11 @@
                                      const ElementwiseUnaryDescriptor& descriptor,
                                      Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
 
+    bool IsFillSupported(const TensorInfo& input,
+                         const TensorInfo& output,
+                         const FillDescriptor& descriptor,
+                         Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
+
     bool IsFloorSupported(const TensorInfo& input,
                           const TensorInfo& output,
                           Optional<std::string&> reasonIfUnsupported = EmptyOptional()) const override;
diff --git a/src/backends/cl/ClWorkloadFactory.cpp b/src/backends/cl/ClWorkloadFactory.cpp
index 905930e..9bbf661 100644
--- a/src/backends/cl/ClWorkloadFactory.cpp
+++ b/src/backends/cl/ClWorkloadFactory.cpp
@@ -287,6 +287,12 @@
     return CreateComparison(comparisonDescriptor, info);
 }
 
+std::unique_ptr<IWorkload> ClWorkloadFactory::CreateFill(const FillQueueDescriptor& descriptor,
+                                                         const WorkloadInfo& info) const
+{
+    return std::make_unique<ClFillWorkload>(descriptor, info);
+}
+
 std::unique_ptr<IWorkload> ClWorkloadFactory::CreateFloor(const FloorQueueDescriptor& descriptor,
                                                           const WorkloadInfo& info) const
 {
diff --git a/src/backends/cl/ClWorkloadFactory.hpp b/src/backends/cl/ClWorkloadFactory.hpp
index 2ea7c60..d1e41b0 100644
--- a/src/backends/cl/ClWorkloadFactory.hpp
+++ b/src/backends/cl/ClWorkloadFactory.hpp
@@ -100,6 +100,9 @@
     std::unique_ptr<IWorkload> CreateEqual(const EqualQueueDescriptor& descriptor,
                                            const WorkloadInfo& info) const override;
 
+    std::unique_ptr<IWorkload> CreateFill(const FillQueueDescriptor& descriptor,
+                                          const WorkloadInfo& info) const override;
+
     std::unique_ptr<IWorkload> CreateFloor(const FloorQueueDescriptor& descriptor,
                                            const WorkloadInfo& info) const override;
 
diff --git a/src/backends/cl/backend.mk b/src/backends/cl/backend.mk
index 721a9ec..87be2ca 100644
--- a/src/backends/cl/backend.mk
+++ b/src/backends/cl/backend.mk
@@ -39,6 +39,7 @@
         workloads/ClDequantizeWorkload.cpp \
         workloads/ClDivisionFloatWorkload.cpp \
         workloads/ClExpWorkload.cpp \
+        workloads/ClFillWorkload.cpp \
         workloads/ClFloorFloatWorkload.cpp \
         workloads/ClFullyConnectedWorkload.cpp \
         workloads/ClGatherWorkload.cpp \
diff --git a/src/backends/cl/test/ClLayerTests.cpp b/src/backends/cl/test/ClLayerTests.cpp
index cbe8dfe..2f2aa17 100644
--- a/src/backends/cl/test/ClLayerTests.cpp
+++ b/src/backends/cl/test/ClLayerTests.cpp
@@ -462,6 +462,11 @@
 ARMNN_AUTO_TEST_CASE(DepthToSpaceNhwcInt16_3, DepthToSpaceTest3<DataType::QSymmS16>, DataLayout::NHWC);
 ARMNN_AUTO_TEST_CASE(DepthToSpaceNhwcInt16_4, DepthToSpaceTest4<DataType::QSymmS16>, DataLayout::NHWC);
 
+// Fill
+ARMNN_AUTO_TEST_CASE(SimpleFill, SimpleFillTest<DataType::Float32>)
+ARMNN_AUTO_TEST_CASE(SimpleFillF16, SimpleFillTest<DataType::Float16>)
+ARMNN_AUTO_TEST_CASE(SimpleFillS32, SimpleFillTest<DataType::Signed32>)
+
 // Floor
 ARMNN_AUTO_TEST_CASE(SimpleFloor, SimpleFloorTest<DataType::Float32>)
 
diff --git a/src/backends/cl/workloads/CMakeLists.txt b/src/backends/cl/workloads/CMakeLists.txt
index 6baeae0..fe9c9fa 100644
--- a/src/backends/cl/workloads/CMakeLists.txt
+++ b/src/backends/cl/workloads/CMakeLists.txt
@@ -38,6 +38,8 @@
     ClDivisionFloatWorkload.hpp
     ClExpWorkload.cpp
     ClExpWorkload.hpp
+    ClFillWorkload.cpp
+    ClFillWorkload.hpp
     ClFloorFloatWorkload.cpp
     ClFloorFloatWorkload.hpp
     ClFullyConnectedWorkload.cpp
diff --git a/src/backends/cl/workloads/ClFillWorkload.cpp b/src/backends/cl/workloads/ClFillWorkload.cpp
new file mode 100644
index 0000000..47a70bc
--- /dev/null
+++ b/src/backends/cl/workloads/ClFillWorkload.cpp
@@ -0,0 +1,35 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "ClFillWorkload.hpp"
+
+#include "ClWorkloadUtils.hpp"
+
+#include <cl/ClTensorHandle.hpp>
+#include <aclCommon/ArmComputeTensorUtils.hpp>
+#include <arm_compute/core/Types.h>
+
+namespace armnn
+{
+using namespace armcomputetensorutils;
+
+ClFillWorkload::ClFillWorkload(const FillQueueDescriptor& descriptor, const WorkloadInfo& info)
+    : BaseWorkload<FillQueueDescriptor>(descriptor, info)
+{
+    m_Data.ValidateInputsOutputs("ClFillWorkload", 1, 1);
+
+    arm_compute::ICLTensor& output = static_cast<IClTensorHandle*>(this->m_Data.m_Outputs[0])->GetTensor();
+    arm_compute::PixelValue pixelValue = GetPixelValue(output, descriptor.m_Parameters.m_Value);
+
+    m_Layer.configure(&output, pixelValue);
+}
+
+void ClFillWorkload::Execute() const
+{
+    ARMNN_SCOPED_PROFILING_EVENT_CL("ClFillWorkload_Execute");
+    RunClFunction(m_Layer, CHECK_LOCATION());
+}
+
+} // namespace armnn
diff --git a/src/backends/cl/workloads/ClFillWorkload.hpp b/src/backends/cl/workloads/ClFillWorkload.hpp
new file mode 100644
index 0000000..8919445
--- /dev/null
+++ b/src/backends/cl/workloads/ClFillWorkload.hpp
@@ -0,0 +1,24 @@
+//
+// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#pragma once
+
+#include <backendsCommon/WorkloadData.hpp>
+#include <backendsCommon/Workload.hpp>
+#include <arm_compute/runtime/CL/functions/CLFill.h>
+
+namespace armnn {
+
+class ClFillWorkload : public BaseWorkload<FillQueueDescriptor>
+{
+public:
+    ClFillWorkload(const FillQueueDescriptor& descriptor, const WorkloadInfo& info);
+    void Execute() const override;
+
+private:
+    mutable arm_compute::CLFill m_Layer;
+};
+
+} //namespace armnn
diff --git a/src/backends/cl/workloads/ClWorkloads.hpp b/src/backends/cl/workloads/ClWorkloads.hpp
index 5c81079..99f3e62 100644
--- a/src/backends/cl/workloads/ClWorkloads.hpp
+++ b/src/backends/cl/workloads/ClWorkloads.hpp
@@ -18,6 +18,7 @@
 #include "ClDequantizeWorkload.hpp"
 #include "ClDivisionFloatWorkload.hpp"
 #include "ClExpWorkload.hpp"
+#include "ClFillWorkload.hpp"
 #include "ClFloorFloatWorkload.hpp"
 #include "ClFullyConnectedWorkload.hpp"
 #include "ClGatherWorkload.hpp"
diff --git a/src/backends/neon/test/NeonLayerTests.cpp b/src/backends/neon/test/NeonLayerTests.cpp
index c4b5d18..acadf6e 100644
--- a/src/backends/neon/test/NeonLayerTests.cpp
+++ b/src/backends/neon/test/NeonLayerTests.cpp
@@ -1224,6 +1224,7 @@
 // Fill
 ARMNN_AUTO_TEST_CASE(SimpleFill, SimpleFillTest<DataType::Float32>)
 ARMNN_AUTO_TEST_CASE(SimpleFillF16, SimpleFillTest<DataType::Float16>)
+ARMNN_AUTO_TEST_CASE(SimpleFillS32, SimpleFillTest<DataType::Signed32>)
 
 #if defined(ARMNNREF_ENABLED)
 
diff --git a/src/backends/reference/RefWorkloadFactory.hpp b/src/backends/reference/RefWorkloadFactory.hpp
index 0b41930..941f1a6 100644
--- a/src/backends/reference/RefWorkloadFactory.hpp
+++ b/src/backends/reference/RefWorkloadFactory.hpp
@@ -130,7 +130,7 @@
                                                       const WorkloadInfo& info) const override;
 
     std::unique_ptr<IWorkload> CreateFill(const FillQueueDescriptor& descriptor,
-                                                      const WorkloadInfo& info) const override;
+                                          const WorkloadInfo& info) const override;
 
     std::unique_ptr<IWorkload> CreateFloor(const FloorQueueDescriptor& descriptor,
                                            const WorkloadInfo& info) const override;
diff --git a/src/backends/reference/test/RefLayerTests.cpp b/src/backends/reference/test/RefLayerTests.cpp
index 4d347ca..d96fa8b 100644
--- a/src/backends/reference/test/RefLayerTests.cpp
+++ b/src/backends/reference/test/RefLayerTests.cpp
@@ -1217,6 +1217,7 @@
 // Fill
 ARMNN_AUTO_TEST_CASE(SimpleFill, SimpleFillTest<DataType::Float32>)
 ARMNN_AUTO_TEST_CASE(SimpleFillF16, SimpleFillTest<DataType::Float16>)
+ARMNN_AUTO_TEST_CASE(SimpleFillS32, SimpleFillTest<DataType::Signed32>)
 
 // Floor
 ARMNN_AUTO_TEST_CASE(SimpleFloor, SimpleFloorTest<DataType::Float32>)