The majority of office workers don't get enough sleep, leading to negative moods and decreased productivity on the job, a recent study found.

The study, performed by Braun Research for Philips Consumer Lifestyle, polled a nationally representative sample of 1,000 office workers. Approximately 85 percent of respondents admitted that they'd be more productive if they got more sleep, and 64 percent said that a lack of sleep results in their day starting on a low note.

Another 64 percent of workers said that they do not wake up before their alarm goes off, and about a third told the survey-takers that they are not ready to wake even even when they do hear their alarm.

Approximately 32 percent of respondents admitted to oversleeping and waking up after they were already supposed to be at work, while another 23 percent admit to taking a nap at work as a result of their inadequate sleep schedule.

On the other hand, workers who reported getting enough sleep appeared to be capable of contributing in the workplace. More than half of worker who said they got a good night's sleep on a regular basis reported feeling more positive and energetic during the day - 44 percent of these workers also had energy at the end of the day. Workers who did not get enough sleep did not have as much energy at the beginning or end of the day - only 39 percent felt energetic in the morning, and only 23 percent felt energetic in the evening.

The survey concludes that, in general, office workers who have poor sleep habits and do not get a good night’s sleep experience bad starts to the day, lack of productivity on the job, along with negative moods.  Higher productivity in the workplace can be linked to the volume and quality of sleep – better rested employees cite more positive workdays.