One thing that makes many people uncomfortable is being required to show the details of the work for whatever deliverable you were asked to produce.
The standard for HRI contracts is that the deliverables must be verifiable and disclose the methods and details of the calculations being used (although not in the body of a report please). This is not because we want to steal your expertise - it's because we want to understand what the basis of the conclusion or recommendation is and be able to see what assumptions were made.
All calculations and original work are considered copyright by the author and HRI norms are that all work be attributed to its author. They are also limited in distribution by the project terms and conditions. If you are not willing to produce deliverables that explain how they got the results then you can expect to be discounted for your product.
HRI is not interested in stealing your original ideas - however - almost all of our originals ideas were given to us by somebody else- this is how education and science work. If you are truly expert - most people will want you to work for them more than once - and if you are not - hiding the logic by which you arrived at your results won't keep you out of the dungheap for long.