Ludacris Baby Mama Is Workin' 9 to 5 ... To Get Custody Back!

Ludacris' baby mama is taking drastic measures to regain custody of their 1-year-old daughter ... SHE GOT A JOB!!! 

According to our sources, Tamika Fuller took losing custody of daughter Cai to Ludacris very hard ... and is trying to get her life in order to gear up for an appeal of their custody arrangement.