Yes; however, only under certain conditions. If a student trained in the 10-hour Construction or General Industry course wants to take the 30-hour course at a later time, they must receive 20 more training hours and the earlier topics and the new topics combined satisfy the curriculum requirements of the 30-hour course.

The limitations are as follows: the same trainer must have done all of the training (the first 10 hours and the next 20 hours); all of the training must be completed, from start to finish, within six months; and the original 10-hour course completion cards must be returned to the OSHA Regional Training Center to receive the 30-hour cards.