(1) A child, if under 18 years of age, or incapable of self-support and unmarried, whether or not ever actually dependent upon the deceased; or a child while regularly enrolled in an approved educational or vocational training institution, who was at the time of the employee's injury or death partially or wholly dependent on the employee, regardless of age; or a child of any age who was mentally or physically disabled at the time of the employee's death and partially or wholly dependent upon him or her.

(2) A spouse.

(3) A parent or grandparent only if dependent, wholly or partially, upon the deceased.

(4) A grandchild, brother, or sister under 18 years of age, or incapable of self-support, and wholly dependent upon the deceased employee, or who is regularly enrolled in an approved educational or vocational training institution, and was at the time of the employee's death, partially or wholly dependent upon the employee, regardless of age; or a grandchild, brother, or sister of any age who was mentally or physically disabled at the time of the employee's death and partially or wholly dependent upon him or her. The relation of dependency must exist at the time of the injury. (Amended 1967, No. 122, § 3; 1977, No. 182 (Adj. Sess.), § 5, eff. May 3, 1978; 1981, No. 204 (Adj. Sess.), § 3.)