The short answer
Say what the work is, when it starts and how long it runs, what it pays and per what, roughly where it is, and what to bring. A post with those five things fills. A post that says general labor, competitive pay, gets skipped by the people you actually want.
Write the title like a person searching
Name the work. Move furniture out of a two bedroom. Demo a bathroom. Unload a truck of drywall. That is a title somebody reads and immediately knows whether they can do.
General labor is not a title, it is a category. It attracts everyone and tells nobody anything, which means you sort through more applicants to find fewer good ones.
Say what the day is actually like
Three or four sentences. What they will be doing most of the day, how heavy it is, whether it is inside or outside, and whether there are stairs, heights, or dust.
Being honest about the hard parts does not scare off good workers. It scares off the ones who would have quit at 10 in the morning, which is exactly what you want it to do.
Put a real number on it
Posts with a rate get more and better applicants than posts without one. Somebody deciding between two jobs is not going to message you to find out if yours is worth the drive.
Say what the number is per. Twenty two an hour, or two hundred for the day, or a fixed price for the job. If you are not sure what to offer, check the Daily Pay Finder for what that work pays in your area.
Be specific about the time
Give the date, the start time, and how many hours you expect. Day labor competes against other day labor, and people build their week around exact times.
If the day might run long, say so in the post rather than at 3 in the afternoon. Nobody minds a long day they agreed to.
What to leave out
Leave out the filler. Must be hardworking and dependable is in every post ever written and it has never once helped anyone decide.
Leave out requirements you do not need. Asking for a truck, a license, and five years of experience for a two hour unload cuts your applicants in half for no reason.
Do not put your phone number or your address in the text. The address goes to the worker automatically once you hire them, and keeping the conversation in the app is what protects both of you if something goes wrong.
A post that works
"Unload a 26 foot truck of flooring into a garage, Thursday 8 to noon, two people needed. Boxes are 50 to 70 pounds, flat driveway, no stairs. 25 an hour, paid same day by Zelle. Bring boots and gloves, we have the dollies and the straps."
Everything a worker needs to decide is in there, which is why that post fills the same day and the vague one sits open all week.
After it is up
Answer fast. The people you want are also applying to other jobs, and the first employer to reply usually gets them.
If nothing comes in within a few hours, look at the rate before you look at anything else. A post that is not moving is almost always priced under the local rate for that work.
This guide is general information, not legal, tax, or insurance advice. Rules differ by state and by situation, so talk to your own professional before you rely on it.