diff --git a/erpnext/hr/doctype/additional_salary_component/additional_salary_component.py b/erpnext/hr/doctype/additional_salary_component/additional_salary_component.py
index 0591082..216dea0 100644
--- a/erpnext/hr/doctype/additional_salary_component/additional_salary_component.py
+++ b/erpnext/hr/doctype/additional_salary_component/additional_salary_component.py
@@ -5,22 +5,72 @@
 from __future__ import unicode_literals
 import frappe
 from frappe.model.document import Document
-from frappe.utils import formatdate, format_datetime, getdate, get_datetime, nowdate
-from erpnext.hr.utils import validate_dates
+from frappe import _
+from frappe.utils import getdate, date_diff
 
 class AdditionalSalaryComponent(Document):
 	def validate(self):
-		# self.validate_dates()
-		validate_dates(self, self.from_date, self.to_date)
+		self.validate_dates()
+		if self.amount <= 0:
+			frappe.throw(_("Amount should be greater than zero."))
 
-	# def validate_dates(self):
- # 		date_of_joining, relieving_date = frappe.db.get_value("Employee", self.employee,
-	# 		["date_of_joining", "relieving_date"])
- # 		if getdate(self.from_date) > getdate(to_date):
- # 			frappe.throw(_("To date can not be less than from date"))
- # 		elif getdate(self.from_date) > getdate(nowdate()):
- # 			frappe.throw(_("Future dates not allowed"))
- # 		elif date_of_joining and getdate(self.from_date) < getdate(date_of_joining):
- # 			frappe.throw(_("From date can not be less than employee's joining date"))
- # 		elif relieving_date and getdate(to_date) > getdate(relieving_date):
- # 			frappe.throw(_("To date can not greater than employee's relieving date"))
+	def validate_dates(self):
+ 		date_of_joining, relieving_date = frappe.db.get_value("Employee", self.employee,
+			["date_of_joining", "relieving_date"])
+ 		if getdate(self.from_date) > getdate(self.to_date):
+ 			frappe.throw(_("To date can not be less than from date"))
+ 		elif date_of_joining and getdate(self.from_date) < getdate(date_of_joining):
+ 			frappe.throw(_("From date can not be less than employee's joining date"))
+ 		elif relieving_date and getdate(self.to_date) > getdate(relieving_date):
+ 			frappe.throw(_("To date can not greater than employee's relieving date"))
+
+	def get_amount(self, sal_start_date, sal_end_date):
+		start_date = getdate(sal_start_date)
+		end_date = getdate(sal_end_date)
+		total_days = date_diff(getdate(self.to_date), getdate(self.from_date)) + 1
+		amount_per_day = self.amount / total_days
+		if getdate(sal_start_date) <= getdate(self.from_date):
+			start_date = getdate(self.from_date)
+		if getdate(sal_end_date) > getdate(self.to_date):
+			end_date = getdate(self.end_date)
+		no_of_days = date_diff(getdate(end_date), getdate(start_date))
+		return amount_per_day * no_of_days
+
+
+
+
+@frappe.whitelist()
+def get_additional_salary_component(employee, start_date, end_date):
+	additional_components = frappe.db.sql("""
+	select name from `tabAdditional Salary Component`
+	where employee=%(employee)s
+	and docstatus = 1
+	and (
+		(%(from_date)s between from_date and to_date)
+		or (%(to_date)s between from_date and to_date)
+		or (from_date between %(from_date)s and %(to_date)s)
+	)""", {
+		'employee': employee,
+		'from_date': start_date,
+		'to_date': end_date
+	})
+
+	if additional_components:
+		additional_components_array = []
+		for additional_component in additional_components:
+			struct_row = {}
+			additional_components_dict = {}
+			additional_component_obj = frappe.get_doc("Additional Salary Component", additional_component[0])
+			amount = additional_component_obj.get_amount(start_date, end_date)
+			salary_component = frappe.get_doc("Salary Component", additional_component_obj.salary_component)
+			struct_row['depends_on_lwp'] = salary_component.depends_on_lwp
+			struct_row['salary_component'] = salary_component.name
+			struct_row['abbr'] = salary_component.salary_component_abbr
+			struct_row['do_not_include_in_total'] = salary_component.do_not_include_in_total
+			additional_components_dict['amount'] = amount
+			additional_components_dict['struct_row'] = struct_row
+			additional_components_array.append(additional_components_dict)
+
+		if len(additional_components_array) > 0:
+			return additional_components_array
+	return False
diff --git a/erpnext/hr/doctype/salary_slip/salary_slip.py b/erpnext/hr/doctype/salary_slip/salary_slip.py
index 99de580..984a78c 100644
--- a/erpnext/hr/doctype/salary_slip/salary_slip.py
+++ b/erpnext/hr/doctype/salary_slip/salary_slip.py
@@ -12,6 +12,7 @@
 from erpnext.hr.doctype.employee.employee import get_holiday_list_for_employee
 from erpnext.utilities.transaction_base import TransactionBase
 from frappe.utils.background_jobs import enqueue
+from erpnext.hr.doctype.additional_salary_component.additional_salary_component import get_additional_salary_component
 
 class SalarySlip(TransactionBase):
 	def autoname(self):
@@ -58,6 +59,12 @@
 				if amount and struct_row.statistical_component == 0:
 					self.update_component_row(struct_row, amount, key)
 
+		additional_components = get_additional_salary_component(self.employee, self.start_date, self.end_date)
+		if additional_components:
+			for additional_component in additional_components:
+				additional_component = frappe._dict(additional_component)
+				self.update_component_row(frappe._dict(additional_component.struct_row), additional_component.amount, "earnings")
+
 	def update_component_row(self, struct_row, amount, key):
 		component_row = None
 		for d in self.get(key):