I suggest using the untranslatable Portuguese word with a footnote explaining the meaning. According to the author of Teoria do Conglobamento, this is what it means:

"theory of the comparison of collective bargaining agreements as a whole"

For a summary of her dissertation thesis, follow the link below.

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Note added at 1 hr (2017-09-20 00:36:16 GMT)
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Further information:

"The theory of the comparison of collective bargaining agreements as a whole (i.e, the conglobamento theory) is a method used to solve the problem regarding the existence of many norms the can regulate an employment agreement at the same time. The answer to the conflict of rules is given by the principle of the hierarchy, according to which the most favorable rule to the worker shall prevail. It is a theory created in opposition to the accumulation theory once, in the latter, one chooses the most favorable norm contained in each conflicting collective instrument, and each rule is applied to the employment agreement in an isolated manner. In the conglobamento theory, the most favorable rule is seen in a broader way, as a whole."