PHILADELPHIA - Workers for the food delivery service, Gopuff, which started right here in Philadelphia, are asking for better pay and flexible access to shifts.Gopuff recently landed a one billion dollar investment and workers say the very same week they received slashed pay, cut bonuses, and limited access to shifts.They want to raise their hourly guarantee to a minimum of $20 an hour .They also want a guaranteed minimum number of hours for all drivers.Workers are also asking for a clear explanation of causes for termination.In a statement to FOX 29, Gopuff stated the following: "Delivery partners with Gopuff earn an average of $18 to $25 per hour, which is among the highest in the industry.