Based on Haitian farmers' voluntary and widespread participation, the project has been deemed a success by many.

The primary incentive for the companies' voluntary participation would be the addition of a "slave free" label.

He said a student's voluntary participation in sports did not require him or her to give up any rights, including privacy.

The program may still be offered for voluntary participation.

This was done by getting participants through voluntary participation in the form of a newspaper advertisement.

But it is also true that the slave trade could not have existed without the voluntary participation of African tribes.

Since the dreams were ugly, they could not be trusted to voluntary participation.

This plan is based on the voluntary participation of the employees.

In this regard, we can also do without the voluntary participation of the private sector, so we are told.

The case isn't indicative of affirmative action, which is based on voluntary participation by beneficiaries.