My son is an apprentice lineman and worked 32 hours in row without a break and fell asleep behind the wheel . What are the allowed hours worked

Unless there is a union contract, or unless the employee works in an industry where maximum hours are set by regulations, such as for interstate truck drivers and pilots, there is no set maximum number of hours that an employer may assign to an employee. The employer must pay the employee 150% of their hourly wage rate for each hour or part of an hour that the employee works after 40 hours.   Michael A. Caldwell