In manufacturing firms, carpenters may assist in moving or installing machinery. As in other building trades, carpentry work is sometimes strenuous. Prolonged standing, climbing, bending, and kneeling are often necessary. Carpenters risk injury working with sharp or rough materials, using sharp tools and power equipment, and from slips or falls. Additionally, many carpenters work outdoors, which can be uncomfortable.
Some carpenters change employers each time they finish a construction job.
Others alternate between working for a contractor and working as contractors themselves on small jobs. Nearly 4 of every 5 worked for contractors who build, remodel, or repair buildings and other structures. Most of the remainder worked for manufacturing firms, government agencies, wholesale and retail establishments, or schools. Carpenters are employed throughout the country in almost every community. Most pick up skills informally by working under the supervision of experienced workers.