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Relevant costing





                           Relevant cost of labour





                                                       Labour





                              Spare capacity                               Full capacity


                                                               Can hire more        Can’t hire more
                            Relevant cost = $nil             labour, i.e. take on       labour
                                                              extra staff or pay

                                                                  overtime


                                                                                    Relevant cost =

                                                                                  opportunity cost of
                                                               Relevant cost =    diverting labour, i.e.

                                                             extra cost of labour   lost contribution
                                                                                   AND extra labour
                                                                                         cost






































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