As the one making a claim, the burden of proof is on you and your age discrimination attorney in Los Angeles. (1) Take photos and record videos. If you have reason to believe you are being discriminated against or retaliated against, start to pay attention. Be careful when recording or taking photos of people without their consent, as it might make things work. (2) Electronic trail. Your work emails, chat rooms, and SMS messages could all be evidence of discrimination, harassment, or retaliation. (3) Employee documents and records. This includes pay stubs, time cards, and written notices. These documents could be used as evidence that your employer is retaliating against you (i.e., demotions, suspensions, and pay cuts). These are extremely important to monitor if you've recently filed a Labor Law Claim with an agency.