At age 14 you may legally work in Texas. Your biggest issue will be finding a company who will hire you.
Texas State Law: A child 14 or 15 years of age may not work more than eight hours in one day or more than 48 hours in one week. A child who is 14 or 15 years of age and is enrolled in a term of a public or private school may not work between the hours of 10 p.m. and 5 a.m. on a day that is followed by a school day or between the hours of midnight and 5 a.m. on a day that is not followed by a school day. A child who is 14 or 15 years of age and is not enrolled in summer school may not work between the hours of midnight and 5 a.m. on any day that school is recessed for the summer.
Go here for a list of approved occupations. [link removed]
You have to have a work permit to work. You can only get them at the age of 15 I believe. Labor laws are now where you can't work under 15. The only "jobs" you can get when you are 14 is something like baby sitting, mowing lawns, cleaning someone's house, etc...
Go to the Texas Department of Labor web sight and look up minor labor laws. You could also google texas minor labor law.
Judges don't deal with cases of under-aged employment.