I have worked with day laborers. I have cut lawns. In fact, no less that a month ago, in the 100 degree heat, I along with 1 immigrant from Mexico and 1 homeless person, cut 11 yards around town. We worked from 6:30am until 7pm with the only breaks for food and water when we were driving to the next job.
There are manual labor jobs out there that do not require you to have interview skills. It is called muscle and will and desire.
If you want that cash, then you will do whatever the job calls for.