Play Job 7, "Getting Trashed". Collect all the trash on stages 3 and 4 and return it to the ship, except for one piece. Leave the last piece just outside the shuttle bay doors. Intentionally die crashing into the planet or suffocating. When the game resumes, pull in the last piece of trash to get an easy time bonus. You can earn over 20,000 in stage 3 and almost 100,000 in stage 4.