Law enforcement sources told TMZ that the staff member wants the "Mean Girls" star to be prosecuted for the offence.
The Palm Desert Police Department have launched an investigation in the alleged altercation which occurred after Lohan and her rehab room-mates arrived home for a bar. Upon their arrival which breached the curfew the incident between Lohan and the staff member occurred.
Local police received a call at 1.03am on December 12th for what is being described as "hand-to-hand battery."
After a three month court ordered stint in the rehab clinic, Lohan is scheduled to be released on January 3rd.