What recommendation does SNT-TC-1A currently make regarding overtime?

SNT-TC-1A does not provide specific recommendations regarding overtime work. The document focuses on the qualifications and certification of personnel in non-destructive testing (NDT), outlining training, experience, and examination requirements for NDT personnel. Overtime practices are typically determined by company policies or labor laws rather than by the guidelines set forth in SNT-TC-1A.

This means that while employers may have their own rules about overtime—such as whether it is mandatory or how it is compensated—these particular aspects are outside the scope of SNT-TC-1A. Thus, the absence of a recommendation on overtime aligns with the document's focus, making this answer the most appropriate option.