1 not having any documents to prove that you are living or working in a country legally:
undocumented immigrants/aliens/workers
2 not having any documents to prove that someone or something is legal:
undocumented immigrants/aliens/workers
3 not officially recorded:
The cash economy facilitates a variety of undocumented transactions.
4 without the official or legal papers that allow someone to work or live somewhere:
10% of workers here are estimated to be undocumented immigrants.
Undocumented potential drug interactions found in medical records of elderly patients in a long term care facility.
The use of illegal and/or undocumented labour is not explicitly forbidden or sanctioned.
How can this kind of hitherto undocumented register variation be explained?
On one side, some argue that unsupported anecdote or experience or information based on evidence, but undocumented, cannot be called evidence.
The process of reaching a final decision is implicit, undocumented in all but one system, and is based on agreement by consensus.
The visit to the farm itself led to the discovery of valuable undocumented evidence.
Undocumented residents may be particularly anxious to avoid any contact with the government, however tangential.
Blood tests were performed at another medical unit, 3 km from the outpatient clinic for undocumented immigrants.