1. Your company or division is struggling financially. If your employer is having financial troubles, and especially if you're hearing rumblings about layoffs, it makes sense to begin looking at your options. Remember, job searches can take a while--so even if you ultimately choose to stay where you are, you'll have given yourself a head start in case your job does end up in jeopardy.

2. You notice that you're getting a lot more feedback in writing. If your boss used to give you feedback in person and now she's putting criticism in emails, she may be creating a paper trail to build a case for firing you. Many companies require written documentation of problems and warnings before an employee is let go.

3. You've been miserable, angry, or bitter for months. Everyone has days when they feel like they hate their job, their coworkers, or their boss. But if that goes on month after month, it's a good sign that nothing is going to change and you should start looking for somewhere where you'll be happier.

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Which Type of Resume is Right for You?

Your resume will most likely be in one of three formats: traditional, functional, or some combination of the two.

Read on for a walk-through of the pros and cons of each... Read More usnews