What appeared before bipedal locomotion or labor activity and why?

Due to the fact that each person has certain needs, such as: getting food, arranging a home, ensuring their own safety and those around them, labor activity appeared much earlier.
Thanks to the evolution and development of the mental abilities of primitive people, they began to adapt to the environment, began to show the first signs of work.
Walking upright appeared only due to the fact that the animals became smaller and it was more difficult to notice them in the high thickets of grass and forest.
This gave impetus to the provision of security and the development of gathering.