diff --git a/app/Jobs/ProcessAccountDataJob.php b/app/Jobs/ProcessAccountDataJob.php
index e88b105..82a214d 100644
--- a/app/Jobs/ProcessAccountDataJob.php
+++ b/app/Jobs/ProcessAccountDataJob.php
@@ -39,7 +39,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '') {
                     Log::warning('No period provided for account data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessArrangementDataJob.php b/app/Jobs/ProcessArrangementDataJob.php
index 64c6a7b..238bb6f 100644
--- a/app/Jobs/ProcessArrangementDataJob.php
+++ b/app/Jobs/ProcessArrangementDataJob.php
@@ -37,7 +37,7 @@
                 $processedCount = 0;
                 $errorCount = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '') {
                     Log::warning('No period provided for arrangement data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessAtmTransactionJob.php b/app/Jobs/ProcessAtmTransactionJob.php
index b10badd..4bfd86c 100644
--- a/app/Jobs/ProcessAtmTransactionJob.php
+++ b/app/Jobs/ProcessAtmTransactionJob.php
@@ -60,7 +60,7 @@
             try {
                 set_time_limit(24 * 60 * 60);
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for ATM transaction data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessBillDetailDataJob.php b/app/Jobs/ProcessBillDetailDataJob.php
index 522eaf9..d3e8c46 100644
--- a/app/Jobs/ProcessBillDetailDataJob.php
+++ b/app/Jobs/ProcessBillDetailDataJob.php
@@ -37,7 +37,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for bill detail data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessCategoryDataJob.php b/app/Jobs/ProcessCategoryDataJob.php
index 3443d6b..986e9f2 100644
--- a/app/Jobs/ProcessCategoryDataJob.php
+++ b/app/Jobs/ProcessCategoryDataJob.php
@@ -38,7 +38,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for category data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessCompanyDataJob.php b/app/Jobs/ProcessCompanyDataJob.php
index 6529010..bbee8a2 100644
--- a/app/Jobs/ProcessCompanyDataJob.php
+++ b/app/Jobs/ProcessCompanyDataJob.php
@@ -40,7 +40,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for company data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessCustomerDataJob.php b/app/Jobs/ProcessCustomerDataJob.php
index afe33c8..0b8016a 100644
--- a/app/Jobs/ProcessCustomerDataJob.php
+++ b/app/Jobs/ProcessCustomerDataJob.php
@@ -31,7 +31,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for customer data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessDataCaptureDataJob.php b/app/Jobs/ProcessDataCaptureDataJob.php
index 70ab0a9..892dd13 100644
--- a/app/Jobs/ProcessDataCaptureDataJob.php
+++ b/app/Jobs/ProcessDataCaptureDataJob.php
@@ -40,7 +40,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for data capture processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessFundsTransferDataJob.php b/app/Jobs/ProcessFundsTransferDataJob.php
index a94d2ab..53e155b 100644
--- a/app/Jobs/ProcessFundsTransferDataJob.php
+++ b/app/Jobs/ProcessFundsTransferDataJob.php
@@ -38,7 +38,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for funds transfer data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessStmtEntryDataJob.php b/app/Jobs/ProcessStmtEntryDataJob.php
index b539609..0a0aa7e 100644
--- a/app/Jobs/ProcessStmtEntryDataJob.php
+++ b/app/Jobs/ProcessStmtEntryDataJob.php
@@ -38,7 +38,7 @@
                 $processedCount = 0;
                 $errorCount     = 0;
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for statement entry data processing');
                     return;
                 }
diff --git a/app/Jobs/ProcessTellerDataJob.php b/app/Jobs/ProcessTellerDataJob.php
index d45f6d8..fffbf95 100644
--- a/app/Jobs/ProcessTellerDataJob.php
+++ b/app/Jobs/ProcessTellerDataJob.php
@@ -146,7 +146,7 @@
             try {
                 set_time_limit(24 * 60 * 60);
 
-                if (empty($this->period)) {
+                if ($this->period === '')) {
                     Log::warning('No period provided for teller data processing');
                     return;
                 }