Religious vocation means a calling to religious life evidenced by the demonstration of commitment practiced in the religious denomination, such as the taking of vows. Examples of individuals with a religious vocation include, but are not limited to, nuns, monks, and religious brothers and sisters.

Religious occupation means an activity which relates to a traditional religious function. Examples of individuals in religious occupations include, but are not limited to, liturgical workers, religious instructors, religious counselors, cantors, catechists, workers in religious hospitals or religious health care facilities, missionaries, religious translators, or religious broadcasters. This group does not include janitors, maintenance workers, clerks, fund raisers, or persons solely involved in the solicitation of donations.

Religious domination means a religious group or community of believers having some form of ecclesiastical government, a creed or statement of faith, some form of worship, a formal or informal code of doctrine and discipline, religious services and ceremonies, established places of religious worship, religious congregations, or comparable evidence of a bona fide religious denomination.

Professional capacity means an activity in a religious vocation or occupation for which the minimum of a United States baccalaureate degree or a foreign equivalent degree is required.

Minister means an individual duly authorized by a recognized religious denomination to conduct religious worship and to perform other duties usually performed by authorized members of the clergy of that religion. In all cases, there must be a reasonable connection between the activities performed and the religious calling of the minister. The term does not include a lay preacher not authorized to perform such duties.

Bona fide organization which is affiliated with the religious denomination means an organization which is closely associated with the religious denomination and which is exempt from taxation as described in section 501(c)(3) of the Internal Revenue Code of 1986 as it relates to religious organizations.

Bona fide nonprofit religious organization in the United States means an organization exempt from taxation as described in section 501(c)(3) of the Internal Revenue Code of 1986 as it relates to religious organizations, or one that has never sought such exemption but establishes to the satisfaction of the Service that it would be eligible therefor if it had applied for tax exempt status.