In Kachinski v. Workmen's Compensation Appeal Board 516 Pa. 240, 532 A.2d 374 (1987), our Supreme Court set forth the following standard for returning an injured employee to work: (1) an employer who seeks to modify a claimant's benefits on the basis that he has recovered some or all of his ability must first produce medical evidence of a change in condition; (2) the employer must then produce evidence of a referral (or referrals) to a then open job (or jobs) which fits in the occupational category for which the claimant has been given medical clearance, e.g., light work, sedentary work, etc.; (3) the claimant must then demonstrate that he has in good faith followed through on the job referral(s), and; (4) if the referral fails to result in a job, then the claimant's benefits should continue.