diff --git a/Math/Optimization/ShiftScheduling/BruteForce.php b/Math/Optimization/ShiftScheduling/BruteForce.php new file mode 100644 index 000000000..e69de29bb diff --git a/Math/Optimization/ShiftScheduling/GA.php b/Math/Optimization/ShiftScheduling/GA.php new file mode 100644 index 000000000..e69de29bb diff --git a/Math/Optimization/ShiftScheduling/Population.php b/Math/Optimization/ShiftScheduling/Population.php new file mode 100644 index 000000000..e69de29bb diff --git a/Math/Optimization/ShiftScheduling/Workday.php b/Math/Optimization/ShiftScheduling/Workday.php new file mode 100644 index 000000000..e69de29bb diff --git a/Math/Optimization/ShiftScheduling/Worker.php b/Math/Optimization/ShiftScheduling/Worker.php new file mode 100644 index 000000000..e69de29bb diff --git a/Math/Optimization/ShiftScheduling/WorkerPool.php b/Math/Optimization/ShiftScheduling/WorkerPool.php new file mode 100644 index 000000000..e69de29bb