In the construction industry, traditionally most exposure to lead has been found in the trades, such as plumbing, welding, and painting. The employer of construction workers exposed to lead is responsible for the development and implementation of a worker protection program in accordance with 29 CFR 1926.20 and 29 CFR 1926.62(e). This program is essential in minimizing worker risk of lead exposure. Construction projects vary in their scope and potential for exposing workers to lead and other hazards. OSHA's standard for lead in construction limits worker exposures to 50 micrograms of lead per cubic meter of air averaged over an 8-hour workday.