Do portable ladders have to be tied to building walls?

Portable ladders do not always have to be tied to building walls, but doing so can enhance safety by preventing the ladder from slipping or falling. The Occupational Safety and Health Administration (OSHA) recommends securing ladders when they are used at an angle greater than 4:1 or in situations where stability may be compromised. Ultimately, the decision to tie a ladder depends on the specific circumstances and the potential hazards present. Always follow safety guidelines and manufacturer instructions.