(a) As used in this section, the term "employer" means the employer for whom the injured employee (employee) was working when injured and the filing requirements apply during the time the employee is entitled to temporary income benefits. The employer's duty to file reports required by this section continues until the employee reaches maximum medical improvement (MMI) or is no longer employed by the employer and the employer has made the report required by subsection (b) of this section. The employer may contact the insurance carrier (carrier) for information regarding the employee's MMI status.
(b) As provided in §129.4 of this title (relating to Adjustment of Temporary Income Benefit Amount), the employer shall file the Supplemental Report of Injury, in the form, format and manner prescribed by the Commission. The report shall be filed with the employer's carrier and provided to the employee within ten days after the end of each pay period in which the employee has a change in earnings as a result of the injury or within ten days after the employee resigns or is terminated. The requirement to report a change of earnings under this subsection includes reporting all post-injury earnings as that term is used in Chapter 129 of this title (relating to Temporary Income Benefits).
(c) For injuries requiring an Employer's First Report of Injury, unless the information required in this subsection is provided on the Employer's First Report of Injury, the employer shall file the Supplemental Report of Injury with the employer's carrier and provide a copy to the employee within three days after:
  (1) the employee begins to lose time from work as a result of the injury;
  (2) the employee returns to work; or
  (3) the employee, after returning to work, experiences an additional day(s) of disability as a result of the injury.
(d) The employer shall file the supplemental report of injury with the carrier by personal delivery, telephone, facsimile or electronic transmission. The employer shall provide a copy of the report to the employee by facsimile or electronic transmission if the employee has identified a personal facsimile number or a personal email address to be used and the employer has the means of sending such a transmission. Otherwise the report shall be provided by personal delivery or sent by mail.
(e) The employer shall maintain a record of the date the Supplemental Report of Injury is filed with the carrier and provided to the employee. If a report required by this section has not been received by the required recipient, the employer has the burden of proving that the report was filed within the required time frame. The employer has the burden of proving that good cause exists if the employer failed to file the report.

Source Note: The provisions of this §120.3 adopted to be effective January 1, 1993, 17 TexReg 8296; amended to be effective December 4, 1995, 20 TexReg 9698; amended to be effective December 26, 1999, 24 TexReg 11394