Smartphones and tablets are making America's offices ruder places to work, according to a new survey.

Sixty-four percent of chief information officers at companies with more than 100 people said cellphones and tablet computers have led to an increase in workplace etiquette breaches, up 13 percent from 2010, according to the survey from Robert Half Technology.

"As mobile devices have become increasingly integrated into the workplace, they've helped us become more productive, but they also can serve as a round-the-clock distraction," said John Reed, senior executive director of Robert Half. "If you're not fully engaged in a conversation or meeting, you may spend more time replying to emails than listening," he said.

The tech company named four pervasive breaches of workplace etiquette that people should avoid for a more cordial workplace:

surfing the Web while having a conversation with someone,

leaving overly long voicemails,

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using the wrong form of communication,

extreme multitasking.

The survey was based on some 2,300 phone interviews with chief information officers in 23 major metro areas.