No particular event sparked this. Just remember to always follow safety regulations. They're all there to protect you from unsafe labour practices.
Also, remind coworkers of safe labour practices. If they are hourly and say “that takes too long,” remind them that they are paid hourly. If they are salary, remind them that safety regulations are written in blood.
If your boss tells you to do something against safe labour practices, ask them to get it in writing.
Exceptions include life-and-death situations.