If you use the quite dangerous chains which lack the anti-kickback links,
then you should also have training on how to avoid injury when using these
chains and wear Personal Protective Equipment (PPE) to protect yourself in
the event of a kickback.

PPE for operating a chainsaw...
http://www.osha.gov/SLTC/etools/logg...er/logger.html

Chainsaw injury statistics...
http://www.elvex.com/facts08.htm