Temporary partial benefits can be paid if the employee is still rehabilitating, but is able to perform some work during the rehabilitation period.  If the pay is less than his average weekly wage, then the worker can be paid benefits equal to 2/3 “of the difference between the average earnings prior to the accident and the amount which the employee, in the exercise of reasonable diligence, will be able to earn during the disability, to be determined in view of the nature and extent of the injury and the ability of the employee to compete in an open labor market.”  § 287.180 R.S.Mo.