diff --git a/module/custom/control.php b/module/custom/control.php
index 1120499dfb..648c51b678 100644
--- a/module/custom/control.php
+++ b/module/custom/control.php
@@ -361,9 +361,7 @@ class custom extends control
         {
             /* Load module and get the data from the post. */
             $this->loadModel('setting');
-            $data = fixer::input('post')
-                ->setIF(!isset($_POST['efficiency']), 'efficiency', 1)
-                ->get();
+            $data = fixer::input('post')->get();
 
             /* Judgment of required items. */
             if(($unit != $_POST['hourPoint']) and empty($_POST['scaleFactor']))
diff --git a/module/custom/js/estimate.js b/module/custom/js/estimate.js
index e855a3efb7..445f72e2e1 100644
--- a/module/custom/js/estimate.js
+++ b/module/custom/js/estimate.js
@@ -18,13 +18,13 @@ $(document).ready(function()
             $('#scaleFactor + span').text(workingHours);
             $('#efficiency + span').text(workingHours);
             $('#efficiency').val("1");
-            $('#efficiency').attr('disabled', 'diabled');
+            $('.efficiency').addClass('hidden');
         }
 
         if($(this).val() == 1 || $(this).val() == 2)
         {
             $('#efficiency').val('');
-            $('#efficiency').removeAttr('disabled');
+            $('.efficiency').removeClass('hidden');
             if($(this).val() == 1)
             {
                 $('#scaleFactor + span').text(storyPoint);
diff --git a/module/custom/view/estimate.html.php b/module/custom/view/estimate.html.php
index f1e2daa8ad..de13cf7456 100644
--- a/module/custom/view/estimate.html.php
+++ b/module/custom/view/estimate.html.php
@@ -37,13 +37,13 @@ $lang->custom->system[] = 'estimate';
           </td>
           <td></td>
         </tr>
-        <tr>
+        <?php $hidden = $unit == 0 ? 'hidden' : '';?>
+        <tr class="efficiency <?php echo $hidden;?>">
           <th class='w-150px'><?php echo $lang->custom->estimateEfficiency;?></th>
           <td>
             <div class='input-group w-300px'>
               <?php
-              $disabled = $unit == 0 ? 'disabled' : '';
-              echo html::input('efficiency', $efficiency, "class='form-control' $disabled");
+              echo html::input('efficiency', $efficiency, "class='form-control'");
               ?>
               <span class='input-group-addon unify-padding'>
                 <?php
diff --git a/module/workestimation/view/index.html.php b/module/workestimation/view/index.html.php
index e2c10302fb..40ebeef4ac 100644
--- a/module/workestimation/view/index.html.php
+++ b/module/workestimation/view/index.html.php
@@ -32,12 +32,12 @@
             <td></td>
             <td></td>
           </tr>
-          <tr>
+          <?php $hidden = $hourPoint == 0 ? 'hidden' : '';?>
+          <tr class="efficiency <?php echo $hidden?>">
             <th><?php echo $lang->workestimation->productivity;?></th>
             <td>
               <div class='input-group'>
-                <?php $disabled = $hourPoint == 0 ? 'disabled' : '';?>
-                <?php echo html::input('productivity', zget($budget, 'productivity', ''), "class='form-control' $disabled");?>
+                <?php echo html::input('productivity', zget($budget, 'productivity', ''), "class='form-control'");?>
                 <span class='input-group-addon unify-padding'>
                 <?php
                   if($hourPoint == 0) echo $lang->hourCommon;