Circular No. 13/2016 / TT-BLDTBXH promulgated the the list of occupations bound by strict requirements for occupational safety and hygiene,  in which, Item 5, Appendix attached to the Circular has stipulated: Assembling, operating, maintaining, repairing and cleaning of grinding machines, sawing machines, milling machines, planning machines, lathe machines, cutting machines, tearing machines, punching machines, shaping machines, material feeding machines, blending and mixing machines, rolling machines, centrifugal machines, drying machines, sorting machines, pressing machines, paper machines, roll forming machines, laminating machines, wrapping machines, packing machines, polishing machines, conveyor belts, water guns, pneumatic guns, industrial printing machines.

The classification of the list of occupations with strict OSH requirements in item 5 of the Annexes issued with TT13 / 2016 / TT-BLDTBXH is unclear, which makes inconsistent application between the law-making body and application business.