diff --git a/module/task/lang/de.php b/module/task/lang/de.php
index 99f24627c1..493e02d009 100644
--- a/module/task/lang/de.php
+++ b/module/task/lang/de.php
@@ -255,6 +255,7 @@ $lang->task->error->recordMinus       = 'Work hours should not be negative numbe
 $lang->task->error->leftNumber        = '"Left" must be numbers.';
 $lang->task->error->recordMinus       = 'Work hours should not be negative number.';
 $lang->task->error->consumedSmall     = '"Genutzt" muss larger than before.';
+$lang->task->error->dateEmpty         = 'Please enter "Date"';
 $lang->task->error->consumedThisTime  = 'Bitte geben Sie die Stunden an';
 $lang->task->error->left              = 'Bitte geben Sie die verbleibenden Stunden an"';
 $lang->task->error->work              = '"Bemerkung" muss kleiner als %d Zeichen sein.';
diff --git a/module/task/lang/en.php b/module/task/lang/en.php
index 022de36c47..571fcd261e 100755
--- a/module/task/lang/en.php
+++ b/module/task/lang/en.php
@@ -255,6 +255,7 @@ $lang->task->error->recordMinus       = 'Work hours should not be negative numbe
 $lang->task->error->leftNumber        = '"Left" must be numbers.';
 $lang->task->error->recordMinus       = 'Work hours should not be negative number.';
 $lang->task->error->consumedSmall     = '"Total Cost" must be > the last number.';
+$lang->task->error->dateEmpty         = 'Please enter "Date"';
 $lang->task->error->consumedThisTime  = 'Please enter "Hours Cost"';
 $lang->task->error->left              = 'Please enter "Hours Left"';
 $lang->task->error->work              = '"Comment" must be <  %d characters.';
diff --git a/module/task/lang/fr.php b/module/task/lang/fr.php
index c542fde310..baa3e29cd1 100644
--- a/module/task/lang/fr.php
+++ b/module/task/lang/fr.php
@@ -255,6 +255,7 @@ $lang->task->error->recordMinus       = 'Work hours should not be negative numbe
 $lang->task->error->leftNumber        = '"Entrez" doit être numérique.';
 $lang->task->error->recordMinus       = 'Work hours should not be negative number.';
 $lang->task->error->consumedSmall     = '"Coût Total" doit être > au dernier chiffre.';
+$lang->task->error->dateEmpty         = 'Please enter "Date"';
 $lang->task->error->consumedThisTime  = 'Entrez le "Coût en Heures"';
 $lang->task->error->left              = 'Entrez les "Heures Restantes"';
 $lang->task->error->work              = '"Commentaire" doit être <  %d caractères.';
diff --git a/module/task/lang/zh-cn.php b/module/task/lang/zh-cn.php
index 9127bc1d4e..fd840a99fa 100755
--- a/module/task/lang/zh-cn.php
+++ b/module/task/lang/zh-cn.php
@@ -255,6 +255,7 @@ $lang->task->error->recordMinus       = '工时不能为负数';
 $lang->task->error->leftNumber        = '"预计剩余"必须为数字';
 $lang->task->error->recordMinus       = '工时不能为负数';
 $lang->task->error->consumedSmall     = '"总计消耗"必须大于之前消耗';
+$lang->task->error->dateEmpty         = '请填写"日期"';
 $lang->task->error->consumedThisTime  = '请填写"消耗"';
 $lang->task->error->left              = '请填写"剩余"';
 $lang->task->error->work              = '"备注"必须小于%d个字符';
diff --git a/module/task/model.php b/module/task/model.php
index 301f650360..19acbbea8d 100755
--- a/module/task/model.php
+++ b/module/task/model.php
@@ -1828,8 +1828,9 @@ class taskModel extends model
 
             if(!empty($record->work[$id]) or !empty($record->consumed[$id]))
             {
-                if(!$record->consumed[$id])   helper::end(js::alert($this->lang->task->error->consumedThisTime));
-                if($record->left[$id] === '') helper::end(js::alert($this->lang->task->error->left));
+                if(helper::isZeroDate($record->dates[$id])) helper::end(js::alert($this->lang->task->error->dateEmpty));
+                if(!$record->consumed[$id])                 helper::end(js::alert($this->lang->task->error->consumedThisTime));
+                if($record->left[$id] === '')               helper::end(js::alert($this->lang->task->error->left));
 
                 $estimates[$id] = new stdclass();
                 $estimates[$id]->date     = $record->dates[$id];
diff --git a/module/task/view/recordestimate.html.php b/module/task/view/recordestimate.html.php
index dfc05fb33b..3abd641dba 100644
--- a/module/task/view/recordestimate.html.php
+++ b/module/task/view/recordestimate.html.php
@@ -115,13 +115,13 @@ if(!empty($members) && $task->mode == 'linear')
       <table class='table table-form table-fixed table-record'>
         <thead>
           <tr class='text-center'>
-            <th class="w-150px"><?php echo $lang->task->date;?></th>
+            <th class="w-150px required"><?php echo $lang->task->date;?></th>
             <?php if($readonly):?>
             <th class="w-60px <?php if(count($reverseOrders) == 1) echo "hidden"?>"><?php echo $lang->task->teamOrder;?></th>
             <?php endif;?>
             <th><?php echo $lang->task->work;?></th>
-            <th class="w-100px"><?php echo $lang->task->consumedAB;?></th>
-            <th class="w-100px"><?php echo $lang->task->leftAB;?></th>
+            <th class="w-100px required"><?php echo $lang->task->consumedAB;?></th>
+            <th class="w-100px <?php if(empty($readonly)) echo 'required'?>"><?php echo $lang->task->leftAB;?></th>
           </tr>
         </thead>
         <tbody>