special welfare benefits
temporary welfare payments
provisional welfare entitlements
Since this is a benefit provided by the government, it will have a specific name that is used. The three options provided here are for use in casual conversation, just to ensure the meaning is conveyed.
(政府から支給されるものなので、特定の言い方があると思いますが、上記の3つは、日常会話で使われて、しかも意味は正しく伝わる表現です)
temporary と provisional は「臨時の」、welfare には「福祉、生活保護」の意味があります。