noun
one-person operation; solo staffing
Wasei-eigo term used especially for restaurants, retail, or service jobs where a single worker handles everything, often during a night shift or when short-staffed.
wasei-eigo (Japanese-coined English), from one operation
深夜のコンビニはワンオペレーションで回していることが多い。
Convenience stores at night are often run as a one-person operation.
あのカフェはいつもワンオペレーションだ
That café is always a one-person operation, so it takes time after you order.