diff --git a/index.js b/index.js
index e303d299f..f6ad9ebe2 100644
--- a/index.js
+++ b/index.js
@@ -1,13 +1,53 @@
-/* Your Code Here */
+const createEmployeeRecord = (employee) => {
+  return {
+    firstName: employee[0],
+    familyName: employee[1],
+    title: employee[2],
+    payPerHour: parseInt(employee[3], 10),
+    timeInEvents: [],
+    timeOutEvents: []
+  }
+}
+
+const createEmployeeRecords = (employees) => {
+  return employees.map(employee => createEmployeeRecord(employee))
+}
+
+function createTimeInEvent(dateStamp) {
+  const [date, time] = dateStamp.split(' ')
+  const checkIn = {
+    type: 'TimeIn',
+    hour: parseInt(time, 10),
+    date
+  }
+
+  this.timeInEvents.push(checkIn)
+
+  return this
+}
+
+function createTimeOutEvent(dateStamp) {
+  const [date, time] = dateStamp.split(' ')
+  const checkOut = {
+    type: 'TimeOut',
+    hour: parseInt(time, 10),
+    date
+  }
 
-/*
- We're giving you this function. Take a look at it, you might see some usage
- that's new and different. That's because we're avoiding a well-known, but
- sneaky bug that we'll cover in the next few lessons!
+  this.timeOutEvents.push(checkOut)
 
- As a result, the lessons for this function will pass *and* it will be available
- for you to use if you need it!
- */
+  return this
+}
+
+function hoursWorkedOnDate(dateStamp){
+ const checkInTime =  this.timeInEvents.find(event => event.date === dateStamp).hour
+ const checkOutTime =  this.timeOutEvents.find(event => event.date === dateStamp).hour
+ return (checkOutTime - checkInTime) / 100
+}
+
+function wagesEarnedOnDate(dateStamp){
+  return hoursWorkedOnDate.call(this, dateStamp) * this.payPerHour
+}
 
 const allWagesFor = function () {
     const eligibleDates = this.timeInEvents.map(function (e) {
@@ -21,3 +61,12 @@ const allWagesFor = function () {
     return payable
 }
 
+function findEmployeeByFirstName(employeeRecords, firstName){
+  return employeeRecords.find(employee => employee.firstName === firstName)
+}
+
+function calculatePayroll(employeeRecords){
+  return employeeRecords.reduce((total, employeeRecord) => {
+     return total + allWagesFor.call(employeeRecord)
+  }, 0)
+}
diff --git a/package-lock.json b/package-lock.json
index 13ee0eee2..b369d8bdf 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3177,7 +3177,7 @@
       "dependencies": {
         "combined-stream": {
           "version": "1.0.6",
-          "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
+          "resolved": "http://registry.npmjs.org/combined-stream/-/combined-stream-1.0.6.tgz",
           "integrity": "sha1-cj599ugBrFYTETp+RFqbactjKBg=",
           "dev": true,
           "requires": {
@@ -3442,9 +3442,9 @@
       }
     },
     "lodash": {
-      "version": "4.17.15",
-      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.15.tgz",
-      "integrity": "sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==",
+      "version": "4.17.11",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.11.tgz",
+      "integrity": "sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==",
       "dev": true
     },
     "lodash.once": {
diff --git a/test/indexTest.js b/test/indexTest.js
index 6c5491c0f..a1b901e60 100644
--- a/test/indexTest.js
+++ b/test/indexTest.js
@@ -340,7 +340,7 @@ describe("The payroll system", function () {
               timesOutRecordRow[1].forEach(function(timeOutStamp){
                 createTimeOutEvent.call(rec, timeOutStamp)
               })
-            }) 
+            })
             expect(calculatePayroll(employeeRecords)).to.eql(12480)
           })
         })