non·em·ploy·ee
| \ ˌnän-im-ˌplȯ(i)-ˈē
, -(ˌ)em-; -im-ˈplȯ(i)-ˌē, -em-\
: a person who is not an employee
… when employees of the university collaborate with nonemployees such as students, consultants, visiting professors, or government employees …— Joanna T. Brougher