mobile phonesHow many times have you sat at your desk immersed in thought only to be interrupted by a ringing phone?

Well, CareerBuilder conducted a recent survey which points to the biggest productivity killers at the office.

Conducted from February through March and over 3,000 full-time employees and 2,000 hiring managers and human resources professionals, the study uncovered culprits at the office. The biggest one? Personal use of technology.

One out of four workers admitted they spend at least one hour on personal calls, emails or texts during a typical workday. And 21 percent revealed they spend an hour or more searching websites for information that’s not related to their job. Other factors hindering maximizing performance on the job include behavior of colleagues, meetings and snack breaks.

Without further ado, here is their list of productivity killers:

1. Cell phone/texting – 50 percent

2. Gossip – 42 percent

3. The Internet – 39 percent

4. Social media – 38 percent

5. Snack breaks or smoke breaks – 27 percent

6. Noisy co-workers – 24 percent

7. Meetings – 23 percent

8. Email – 23 percent

9. Co-workers dropping by – 23 percent

10. Co-workers putting calls on speaker phone – 10 percent