In many businesses it is often necessary to calculate the cost of a job.  For example, if someone was getting a new kitchen fitted or their car fixed it would be important to calculate how much that job is going to cost.

A job costing statement will detail all the cost involved in completing it e.g

As part of the job costing, it is very important for firms to keep accurate records on wages which can be done using clocking in and out cards or keeping a record of amount of hours spent on one job and material used.  If they do not get this right, they could charge less for the job which means they make less money and may not be able to cover their own costs.