• Walmart is getting into the restaurant delivery game.
• Some Spark delivery workers now field orders from in-store restaurants like McDonald's.
• It's the latest expansion for Walmart's delivery operations.

Your next food delivery order might come to your door thanks to Walmart.

The big-box chain began asking its Spark delivery workers at some stores to deliver restaurant orders, according to messages sent to the workers. The orders involve picking up food at restaurants inside Walmart stores, including some McDonald's and Dunkin' locations.

Restaurant orders are a new frontier for Walmart's e-commerce business, which topped $150 billion in global sales for the first time last fiscal year.

One in-app message viewed by Business Insider indicated that the restaurant deliveries began last Monday. Another, sent via email to a Spark worker, said that some restaurant orders would be batched for delivery with orders of Walmart merchandise.

A Walmart spokesperson declined to comment, citing a quiet period ahead of the company's next earnings report on Thursday.

"You may start seeing restaurant delivery offers from participating restaurants located inside Walmart stores in your area, offering more ways to earn," the email reads.

The orders "may include items like meals, sides, or drinks," the message says.

Besides national chains like McDonald's and Dunkin', some Walmart stores are home to regional restaurants. California-based hot dog chain Wienerschnitzel, for example, said last year that it would open restaurants at several Walmart stores in the Western US.

Walmart has grown its Spark delivery network over the last several years. The company introduced the service in 2018. Spark uses Walmart's 4,600 US stores to fill orders.

The service focuses on same-day deliveries of fresh produce, electronics, and other Walmart merchandise. The retailer is trying to deliver those items faster — a demand that's increasing pressure on the store workers who pick items and pack the orders.

Spark workers also make deliveries for other retailers, such as Home Depot and Sur La Table.

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