It is not mandatory but in most cases it is appropriate for a model to sign a release, especially if you are a photographer and want to protect your images.
Models do not have release forms that they have people sign. It is the photographer that offers the model a model release because by law the creation/rights of the images are automatically given to the photographer. You must waive your rights to the images unless you want to pay the photographer a buyout fee, which they usually do not offer or is very expensive. Models in general are allowed to use the images for promotional purposes when signing a model release so as long as you are able to do that, then you do not need to worry about owning the rights to the images.
The person who's name is on the medical records will be the one to sign a medical release. If the person is a minor, the parent or guardian will sign the release. If the person is unable to sign the release, the next of kin will sign the release.
2011
Models of the Runway - 2009 Role Models - 2.6 was released on: USA:18 February 2010
YES, it is safe to sign.
Manufacturers typically release new bike models once a year, usually in the fall or early spring.
Hollywood Models - 1928 was released on: USA: 1928
Hollywood Models - 1995 was released on: USA: 1995
When selling you sign at the Owner or Release block. When buying sign at Purchaser.
Inquisitive Models - 1903 was released on: USA: January 1903
Models of the Runway - 2009 Role Models 2-6 was released on: USA: 18 February 2010
Modeling agencies typically take out a 20% commission from each gig they book for their models. This is the only way they are allowed to make money from models they sign.