Employers are required to file Form L-3, at the end of the year or if a business terminates during the year. Form L-3 is a cover letter used to submit copies of Federal Form W-2 to LDR. The due date to file Form L-3 is January 31st. If an employer fails to submit copies of the employees W-2s with Form L-3, a penalty of $5 per W-2 statement, not to exceed $7,500, may be imposed.