C++ simple thread worker class

worker.h

#include <thread>
#include <condition_variable>

class Worker {
 public:
  Worker() { 
    start();
  }
  
  ~Worker() {
    stop();
  }

 private:
  void start() {
    terminated_ = false;
    thread_ = std::thread(&Worker::execute, this);
  }
  
  void stop() {
    terminated_ = true;
    thread_wait_.notify_one();
    thread_.join();
  }
  
  void execute() {
    while (!terminated_) {
      // sleep 2 seconds
      std::unique_lock<std::mutex> locker(mutex_);
      thread_wait_.wait_for(locker, std::chrono::seconds(2));
    }
  }

  std::thread thread_;
  std::mutex mutex_;
  std::atomic_bool terminated_ {false};
  std::condition_variable thread_wait_;
};