With workloads at offices growing as a result of job cuts amid the weak economy, food service companies are seeking to capitalize on an increasing need among workers to use time and money efficiently.

Yasuhiro Yamamoto, a 46-year-old who runs a management consulting business, is often too busy with clients to spare time for lunch, so he uses the hamburger delivery service of McDonald's Japan once a week to eat at his office in Shibuya Ward, Tokyo.

The Mac Delivery service receives orders from customers by phone or online and delivers them in insulated bags.