un·doc·u·ment·ed 
/ˌʌnˈdɑ:kjəˌmɛntəd/ adjective
/ˌʌnˈdɑ:kjəˌmɛntəd/ adjective 1 : not having the official documents that are needed to enter, live in, or work in a country legally
▪ undocumented workers/aliens/immigrants 2 : not supported by evidence that consists of documents : not having written proof
▪ The company cannot reimburse you for undocumented travel expenses.
▪ undocumented workers/aliens/immigrants
▪ The company cannot reimburse you for undocumented travel expenses.
