However, the States have used a number of variations of these primary techniques that impact on their successfulness. In addition, several extrinsic factors influence the utility and effectiveness of the techniques. These variations include whether use of the technique is mandatory or nonmandatory, whether it is used alone or in combination with other procedures, whether a neutral third-party is used, cost, and the presence of statutorily required criteria to be considered in the process. Other factors include whether it is possible to bypass the statutory procedures, the configuration of techniques used, the number and selection of neutrals, the timetable for implementing the process, and whether there is a right to strike. The ways in which statutory and extrinsic factors can interact is illustrated in an analysis of the Ohio Collective Bargaining Law for Public Employees. 143 footnotes.