diff --git a/jey_erp/custom/bulk_salary_structure_assignment.py b/jey_erp/custom/bulk_salary_structure_assignment.py
new file mode 100644
index 0000000..97e1c7b
--- /dev/null
+++ b/jey_erp/custom/bulk_salary_structure_assignment.py
@@ -0,0 +1,54 @@
+import frappe
+from frappe.query_builder.custom import ConstantColumn
+from frappe.query_builder.functions import Coalesce
+from frappe.query_builder.terms import SubQuery
+
+from hrms.payroll.doctype.bulk_salary_structure_assignment.bulk_salary_structure_assignment import (
+	BulkSalaryStructureAssignment,
+)
+
+
+class CustomBulkSalaryStructureAssignment(BulkSalaryStructureAssignment):
+	@frappe.whitelist()
+	def get_employees(self, advanced_filters: list) -> list:
+		quick_filter_fields = [
+			"company",
+			"employment_type",
+			"branch",
+			"department",
+			"designation",
+			"grade",
+		]
+		filters = [[d, "=", self.get(d)] for d in quick_filter_fields if self.get(d)]
+		filters += advanced_filters
+
+		Assignment = frappe.qb.DocType("Salary Structure Assignment")
+		employees_with_assignments = SubQuery(
+			frappe.qb.from_(Assignment)
+			.select(Assignment.employee)
+			.distinct()
+			.where((Assignment.from_date == self.from_date) & (Assignment.docstatus == 1))
+		)
+
+		Employee = frappe.qb.DocType("Employee")
+		Grade = frappe.qb.DocType("Employee Grade")
+		query = (
+			frappe.qb.get_query(
+				Employee,
+				fields=[Employee.employee, Employee.employee_name, Employee.grade],
+				filters=filters,
+			)
+			.where(
+				(Employee.status == "Active")
+				& (Employee.date_of_joining <= self.from_date)
+				& ((Employee.relieving_date > self.from_date) | (Employee.relieving_date.isnull()))
+				& (Employee.employee.notin(employees_with_assignments))
+			)
+			.left_join(Grade)
+			.on(Employee.grade == Grade.name)
+			.select(
+				Coalesce(Employee.ctc, Grade.default_base_pay, 0).as_("base"),
+				ConstantColumn(0).as_("variable"),
+			)
+		)
+		return query.run(as_dict=True)
diff --git a/jey_erp/hooks.py b/jey_erp/hooks.py
index f6b3ce0..286c09a 100644
--- a/jey_erp/hooks.py
+++ b/jey_erp/hooks.py
@@ -24,9 +24,9 @@ doctype_js = {
     "Employee": "public/js/employee.js"
 }
 
-# override_doctype_class = {
-#     "Report": "jey_erp.custom_report.CustomReport"
-# }
+override_doctype_class = {
+    "Bulk Salary Structure Assignment": "jey_erp.custom.bulk_salary_structure_assignment.CustomBulkSalaryStructureAssignment"
+}
 
 doc_events = {
     "Employee Onboarding": {