‘Sec. 11. 39-A MRSA §401, sub-§1, as amended by PL 2001, c. 235, §§2 and 3, is further amended to read:
A private employer who has not secured the payment of compensation under this section and sections 402 to 407 is not entitled, in a civil action brought by an employee or the employee's representative for personal injuries or death arising out of and in the course of employment, to the defense set forth in section 103. The employee of any such employer may, instead of bringing a civil action, claim compensation from the employer under this Act.
The following employers are not liable under this section for securing the payment of compensation in conformity with this section and sections 402 to 407 with respect to the employees listed, nor deprived of the defenses listed in section 103:
(1) As used in this subsection, "casual" means occasional or incidental. "Seasonal" refers to laborers engaged in agricultural or aquacultural employment beginning at or after the commencement of the planting or seeding season and ending at or before the completion of the harvest season; and
(3) The employer has 6 or fewer agricultural or aquacultural laborers or the employer has more than 6 such laborers but the total number of hours worked by all such laborers in a week does not exceed 240 and has not exceeded 240 at any time during the 52 weeks immediately preceding the injury; and
(4) The employer maintains an employer's liability insurance policy with total limits of not less than $100,000 multiplied by the number of full-time equivalent agricultural or aquacultural laborers employed by that employer and medical payment coverage of not less than $5,000.
For purposes of this paragraph, seasonal and casual workers, immediate family members of unincorporated employers and immediate family members of bona fide owners of at least 20% of the voting stock of an incorporated employer are not considered agricultural or aquacultural laborers. "Immediate family members" means parents, spouses, brothers, sisters and children.
The burden of proof to establish an exempt status under this subsection is on the employer claiming the exemption.’