Workers usually wear water-repellent boots while working in wet concrete. Most concrete masons worked for concrete contractors or for general contractors on projects such as highways, bridges, shopping malls, or large buildings such as factories, schools, and hospitals. A small number were employed by firms that manufacture concrete products. Most terrazzo workers worked for special trade contractors who install decorative floors and wall panels. Most self-employed masons specialized in small jobs, such as driveways, sidewalks, and patios.
Many masons first gain experience as construction laborers.
When hiring helpers and apprentices, employers prefer high school graduates who are at least 18 years old, in good physical condition, and licensed to drive. The ability to get along with others also is important because concrete masons frequently work in teams. High school courses in shop mathematics and blueprint reading or mechanical drawing provide a helpful background. They begin with tasks such as edging and jointing and using a straightedge on freshly placed concrete. As they progress, assignments become more complex, and trainees usually can do finishing work within a short time.