In Hudson v. Jackson Plating Co, 105 Mich App 572, 577-578; 307 NW2d 96 (1981), the Court explained the proper application of 435 - MCL 418.435; MSA 17.237(435): In cases involving disability because of occupational diseases incurred while working for multiple employers . . . the last employer is liable either if (a) the employee's work with the last employer caused an aggravation of the prior condition or (b) the last employment (no matter how brief) was of the same nature and type in which the disease was first contracted, regardless of whether the last employment aggravated the prior condition.