Chase defines office supply stores as those that specialize in selling office supplies. Office Max, Office Depot, or Staples likely fit this bill. Stores that sell mostly general goods — even if they also sell office items — likely won’t qualify for the bonus rewards. Department stores or electronics sellers, for instance, fall into this category. Similarly, merchants that specialize in just a few big office necessities, such as office furniture or photocopiers, likely won’t qualify.