Error: Unknown provider: employeesProvider

Error: Unknown provider: employeesProvider

I am having a heck of a time trying to figure out why I'm getting the
Unknown provider error in Angular. I've checked every other question I
could find on the subject and most suggest an error in dependency
injection. However, it doesn't seem to me like I'm forgetting to inject
anything. I've been trying to get the resolve property to work like this
post by Misko. I'm able to console log out the employee data after it's
resolved, but then I get the Unknown provider error, which prevents the
data from being shown on the page.
Here is my router:
"use strict";
var app = angular.module('app',[
'employeeServices'
]);
app.config(appRouter);
function appRouter ($routeProvider) {
$routeProvider
.when('/employees/:account_id', {
controller: 'EmployeeCtrl',
templateUrl: 'view/employee/view.html',
resolve: employeeCtrl.resolve
})
.otherwise({ redirectTo: '/' });
}
Here is my controller
var employeeCtrl = app.controller('EmployeeCtrl', [
'$scope',
'employees',
function ($scope, employees) {
$scope.employee = employees;
console.log($scope.employee);
}
]);
employeeCtrl.resolve = {
employees: function (Employee, $q, $route) {
var deferred = $q.defer();
console.log("current params: ", $route.current.params.account_id);
Employee.getOne({ id: $route.current.params.account_id }, function
(successData) {
deferred.resolve(successData);
}, function (errorData) {
deferred.reject(errorData);
});
return deferred.promise;
}
};
And my factory:
angular.module('employeeServices', ['ngResource'])
.factory('Employee', ['$resource', function ($resource) {
return $resource('/employees/:id/json',
{
id: '@account_id'
},
{
'save': {
method: 'POST',
isArray: false
},
'update': {
method: 'PUT',
params: {
id: '@account_id'
}
},
'remove': {
method: 'DELETE',
params: {
id: '@account_id'
}
},
'getOne': {
method: 'GET',
params: {
id: '@account_id'
},
isArray: false
},
'query': {
method: 'GET',
params: {
id: '@account_id'
},
isArray: true
}
}
);
}]);
Any suggestions would be so greatly appreciated!