A lot of painting companies advertise a warranty without saying much about what it actually covers. There's a real difference between a "workmanship warranty" (the company stands behind its labor if paint fails due to how it was applied) and a "product warranty" (the paint manufacturer covers defects in the paint itself, which most manufacturers already offer regardless of who applies it).
A strong workmanship warranty should specify a length of time (multiple years, not months), what's covered (peeling, blistering, or cracking due to application or prep issues), what's excluded (normal wear, weather damage unrelated to workmanship), and how to actually file a claim.
A vague warranty is usually a sign the company hasn't thought through what it's actually promising — not necessarily a sign of who's doing the labor. Plenty of reputable painting companies, ours included, contract out their crews; what matters is whether the company still puts its name behind the finished work in writing, with specific, itemized coverage instead of a generic "satisfaction guarantee."
Our own workmanship warranty is a useful example of what "specific" looks like on paper. It covers peeling, blistering, flaking, or cracking caused by improper prep or application; visible brush, roller, or lap marks and uneven coverage that falls short of our quality standards; overspray or masking damage to surfaces that weren't meant to be painted; and prep steps — caulking, patching, sanding — that weren't done to the standard listed on your work order. It doesn't cover normal fading from sun and weather after a proper application, defects in the paint itself (that falls under the manufacturer's own warranty), damage caused after the job is done by the customer or a third party, pre-existing substrate problems we weren't told about, or structural and moisture issues unrelated to how the job was painted. That's the level of detail worth asking any contractor to match before you sign.
See what our workmanship warranty actually covers before comparing it to any other quote you've received.