Instacart is learning a hard lesson about the importance of paying workers properly. The grocery delivery service is revising its pay policies for shoppers after complaints that it was counting customer tips toward its minimum pay goals -- as far as workers were concerned, stealing tips. From now on, tips will "always be separate" from Instacart's contribution if it has to compensate a shopper to reach minimum pay. Instacart is also raising the minimum pay for all order batches. Where it used to pay shoppers at least $3, it'll now offer $5 for delivery-only batches (where someone else has already picked the groceries) or $7 to $10 for situations where workers both shop and deliver.