diff --git a/index.js b/index.js
index e303d299..745d835a 100644
--- a/index.js
+++ b/index.js
@@ -1,4 +1,59 @@
-/* Your Code Here */
+function createEmployeeRecord(employeeInfo) {
+  return {
+    firstName: employeeInfo[0],
+    familyName: employeeInfo[1],
+    title: employeeInfo[2],
+    payPerHour: employeeInfo[3],
+    timeInEvents: [],
+    timeOutEvents: []
+  }
+}
+
+function createEmployeeRecords(employeeInfoArray) {
+  return employeeInfoArray.map(employeeInfo => createEmployeeRecord(employeeInfo))
+}
+
+function createTimeInEvent(timePunch) {
+  this.timeInEvents.push(parseTimePunch(timePunch, "TimeIn"))
+  return this
+}
+
+function createTimeOutEvent(timePunch) {
+  this.timeOutEvents.push(parseTimePunch(timePunch, "TimeOut"))
+  return this
+}
+
+function parseTimePunch(timePunchString, type) {
+  const timePunchFormat = /^\d{4}-\d{2}-\d{2} \d{4}$/;
+  if (!timePunchFormat.test(timePunchString)) {
+    throw new Error("Time punch format must be 'YYYY-MM-DD HHMM'");
+  }
+  return {
+    type: type,
+    hour: Number.parseInt(timePunchString.split(' ')[1]),
+    date: timePunchString.split(' ')[0]
+  }
+}
+
+function getDuration(timeInTime, timeOutTime) {
+  const timeInHour = Math.floor(timeInTime / 100);
+  const timeInMinutes = Number.parseInt(timeInTime.toString().slice(-2)) / 60;
+  const timeOutHour = Math.floor(timeOutTime / 100);
+  const timeOutMinutes = Number.parseInt(timeOutTime.toString().slice(-2)) / 60;
+  return (timeOutHour + timeOutMinutes) - (timeInHour + timeInMinutes)
+}
+function hoursWorkedOnDate(dateWorked) {
+  const timeInTime = this.timeInEvents.find(event => event.date === dateWorked).hour;
+  const timeOutTime = this.timeOutEvents.find(event => event.date === dateWorked).hour;
+  if (!timeInTime || !timeOutTime) throw new Error("Missing punch detected");
+  return getDuration(timeInTime, timeOutTime)
+}
+
+function wagesEarnedOnDate(dateWorked) { return this.payPerHour * hoursWorkedOnDate.call(this, dateWorked) }
+
+function findEmployeeByFirstName(collection, firstNameString) {
+  return collection.find(record => record.firstName === firstNameString)
+}
 
 /*
  We're giving you this function. Take a look at it, you might see some usage
@@ -10,14 +65,16 @@
  */
 
 const allWagesFor = function () {
-    const eligibleDates = this.timeInEvents.map(function (e) {
-        return e.date
-    })
+  const eligibleDates = this.timeInEvents.map(function (e) {
+    return e.date
+  })
 
-    const payable = eligibleDates.reduce(function (memo, d) {
-        return memo + wagesEarnedOnDate.call(this, d)
-    }.bind(this), 0) // <== Hm, why did we need to add bind() there? We'll discuss soon!
+  const payable = eligibleDates.reduce(function (memo, d) {
+    return memo + wagesEarnedOnDate.call(this, d)
+  }.bind(this), 0) // <== Hm, why did we need to add bind() there? We'll discuss soon!
 
-    return payable
+  return payable
 }
 
+
+function calculatePayroll(employeeRecords) { return employeeRecords.reduce((total, record) => total + allWagesFor.call(record), 0) }
diff --git a/package-lock.json b/package-lock.json
index 13ee0eee..b369d8bd 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/package.json b/package.json
index dc887287..d5822374 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "A JavaScript lab",
   "main": "index.js",
   "scripts": {
-    "test": "mocha --timeout 5000 -R mocha-multi --reporter-options spec=-,json=.results.json"
+    "test": "mocha --timeout 5000 -b -R mocha-multi --reporter-options spec=-,json=.results.json"
   },
   "author": "flatironschool",
   "license": "Included in Repo",