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English to English translations [PRO] Social Sciences - Human Resources
English term or phrase:long
Ethical behavior, **long** the foundation of our success, has never been more important to our Company. Consumers expect it from the makers of products they use, retailers from those they buy from, and shareholders from those they invest in.
No, I don't think that 'for a long time' carries any specific implication that this is no longer the case; any such implication would be mainly conveyed by the tenses of the verbs around this expression.
The problem with your own suggestion of 'longstanding' is that it is the wrong part of speech (an adjective, not an adverb), and as such, couldn't easily be fitted into the sentence as it stands, without quite major re-writing.
Although ethical behavior has been the foundation of our success for a long time, it is now more important than ever. (One possibility. I'm sure that other people will offer more.)
The translation workplace 
peer agreement (net): +8
