In today’s work environment, job-seekers change jobs, employers, and careers on a regular basis. Gone are the days when any job-seeker gets hired and plans a long-term employment with an employer. In fact, recent studies indicate that the average worker will change careers — not just jobs — several times over the course of a lifetime. But how do you know when it’s time to change jobs and when it’s time to change careers? Get Career Guides for Free.