Dawn Holland, a chemical dependency technician at the Betty Ford Clinic, has accused one of the patients of assault. Because the accused is Lindsay Lohan, TMZ has been digging to find every piece of information they can.

Currently, Holland is claiming that she’s badly hurt, that Lindsay had been drinking when they had the altercation and she’s been forced to file for workers’ compensation as a result.

Holland has since been let go from her position at the clinic for speaking to TMZ.

The alleged assault occurred on December 12 around 1:00 in the morning, when Linds and two roommates arrived at the facility -- after curfew -- following an evening out.

When security caught them trying to jump a wall on the property, Holland was summoned to do a breath test on the three women. She says Lohan refused to take the test and shoved Holland. Moments later, during a 911 call, Holland says Lindsay forcibly took the phone from her hand to cause a severe sprain.

Holland has filed a police report.