Then, Smith spent 169 days in jail before pleading no contest to a felony charge late last month.
The November 2008 arrest was not related in any way to his job at the hospital. According to the newspaper, court records show that Smith was ordered to undergo psychiatric treatment and was placed on probation.
Smith's case comes as the county is trying to crack down on employees who have criminal records.
The Los Angeles Times said Smith went to work last week but his attorney, Christopher Darden, says he is now on administrative leave adding that his client does not have a violent personality.
Harbor-UCLA employees told the newspaper they were shocked to see Smith back on the job.