I am asking for you help with the following sentence:
Peter has been working at ABC corporation until present time.
Can it be understood as “Peter has been working at ABC corporation until recently. However, now he does not.”? If there is even a slight possibility to understand it like this, how can I paraphrase it in a non-ambiguous way?
P.S. Meanwhile, do I need “the” in “until (the) present time”, considering that this sentence is an extract from a formal document?
Basically, I wouldn’t bother to use the present perfect continuous in this case because you are not using it to say ‘for how long/since when’. Use the simple present if all you want to convey is that he currently works there. For example:
“Peter (currently) works at ABC Corporation.”
“Peter is (currently) employed by (the) ABC Corporation.”
If you said “Peter has been working at ABC Corporation for 10 years”, I would understand that to mean that he currently works at ABC Corporation and that so far the length of his employment there is 10 years.
By the way, I would not ever use the expression “until present time”.
Yes, it can affect the use of “the”. As a rule of thumb, if the full name would require a definite article (e.g. if the last word is an ordinary noun), you would include “the”. If the abbreviations stand for names, however, you wouldn’t. Thus:
The British Broadcasting Corporation = “the BBC”, e.g. “the BBC is a strange organisation”.
Rooney, Giggs and Tevez Ltd = “RGT”, e.g. “RGT is the country’s leading retailer of men’s underwear”.
Unfortunately there are exceptions in category 1; thus “CBS” never takes “the”. (Perhaps because everyone has forgotten what it originally stood for.)