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Relevant Costs

Forums › Ask ACCA Tutor Forums › Ask the Tutor ACCA PM Exams › Relevant Costs

  • This topic has 1 reply, 2 voices, and was last updated 4 years ago by John Moffat.
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  • November 8, 2021 at 9:04 am #640213
    anniebabe
    Participant
    • Topics: 33
    • Replies: 99
    • ☆☆

    G Co is preparing a tender for a new contract. This contract requires 600 hours of skilled labour. Skilled labour is paid at $17 per hour. There is a shortage of skilled labour, as all employees are currently fully employed in the manufacture of product H:-
    Selling Price $120
    Skilled Labour $34
    Variable costs $20
    Contribution $66

    What is the relevant cost of labour?
    Answer is $30000

    I understand that if we to undertake the new contract we cannot make H, meaning that product H = labour 2 hours per unit (34/17) 300 units will be foregone therefore lost contribution is $19800 (300*66)
    But why are they including the labour in the calculation 600hrs at $17
    I understand that they were at full capacity, but surely if we do not make one and make the other there is no extra labour needed?
    please help, I am misunderstanding something

    November 8, 2021 at 3:30 pm #640227
    John Moffat
    Keymaster
    • Topics: 57
    • Replies: 54830
    • ☆☆☆☆☆

    Let me explain with a little example.

    Suppose they currently make a product that takes 1 hour per unit. The selling price is $50, materials are $20, and labour is $5. So the contribution is $25 per unit.

    If 1 hour is taken for a new contract then they lose the revenue of $50 but the save the materials of $20. (They will still be paying for the labour).

    So the net amount lost (and therefore the relevant cost) is 50 – 20 = $30. This is the same (and is always the same) as the contribution ($25) plus the labour ($5).

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