Heating & cooling installs and services commercial heating and cooling systems. elklandelkland uses job costing to calculate the cost of its jobs. overhead is allocated to each job based on the number of direct labor hours spent on that job. at the beginning of the current year, elklandelkland estimated that its overhead for the coming year would be $ 61 comma 500$61,500. it also anticipated using 4 comma 1004,100 direct labor hours for the year.