My question involves workers compensation law for the state of:

Hi, My employer offered me an intial Salary of 65 K in H1B LCA. After completing 6 months, they increased my salary to profit sharing on billing rate per hour. my billing rate is 80 $ per hour. so he offered me he will pay, 80% of the billing ,which comes to 64 $ per hr.
But in the paystub , he is giving only 65K per annum. the difference amount paying by seperate checks. He paid for 6 months and then I got a new job offer and moving to different company. now he is not willing to pay the rest of the amount due. I have proof of the checks he given for last 6 months.

Can i do some thing legally to get my money back with check proofs . because, they didn;t given any written proof for the salary increase.

Any inputs in this regards will be highly appreciated.

Many Thanks in advance.