Work done by a force over a distance, relative or absolute?

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Keran
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When we calculate the work done by a force applied on an object (suppose force and movement are in the same direction and a constant force) do we take into account the relative distance ot the absolute distance.

When saying relative distance i mean if the object is moving on top of a platform that is also in motion (not same velocity).

Sorry if my explanation is unclear, I can upload a picture to try to explain it a bit better. It may be a stupid question and sorry if I shouldn't post it here, this is my first post.

Thank you very much!
 
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Work is defined in terms of displacement not distance, so the choice of origin is irrelevant.