I know that there is no maximum number of masters degrees that one can get, but is it advisable for one to get them in diverse areas? for example, i have an interest in both economics (and am thus considering doing an LLM in law and economics) but i also have an interest in human rights

thanks

I think two LLMs are not the rule, but not that uncommon. In your case you would only get the same degree but - as regards substance - you would have two completely different programs and experiences.

On the other hand, money and your long-term plans might matter: When money is no (substantial) problem and you have a strong interest in both areas, go for it. One year of additional education on the other hand means that you will enter working life one year later but, of course, one year in relation to 40, 45 years of working doesn't matter at all. (And maybe you are not that keen on entering working life as soon as possible.)

Another thought: I think that the both fields you mentioned are so diverse that two LLMs won't help you to land a better job because in job A you might only need LLM A but not LLM B and vice versa. Only if you aim for academia, eg the wide field of public law, you would probably be able to "make use of" both LLMs on the job.