Employees are eligible to participate in the return-to-work employer's program under the following conditions:

(1) The employee is a permanent employee.

(2) The employee is receiving compensation under RCW 51.32.090.

(3) The employee has a temporary disability which makes him/her temporarily unable to return to his or her previous work, but who is capable of carrying out work of a lighter or modified nature as evidenced by a written statement from a physician or licensed mental health professional.