They include the conditions of employment of office workers working for example in the field of financing, information technology services, construction, metallurgy or data reporting. The NLRA allows employers and unions to enter into union safety agreements that require all workers in a bargaining unit to become unionized and begin paying union dues and royalties within 30 days of hiring. The National Labor Relations Act prohibits employers from disrupting, restricting, or coercing workers in the exercise of rights related to organizing, creating, joining, or assisting in an organization of labor for the purposes of collective bargaining, or from cooperating to improve working and employment conditions, or from refraining from engaging in such an activity. Similarly, labour organisations must not restrict or coerce staff in the exercise of these rights. There are provisions that are stipulated in collective agreements that are not governed by legislation. . . .