liability partnerships, in which partners also participate in local operating entities in various countries as required by local regulations. Financial indicators Three financial statistics are typically used to measure and rank law firms' performance: Profits per equity partner (PPEP or PPP): Net operating income divided by number of equity partners. High PPP is often correlated with prestige of a firm and its attractiveness to potential equity partners. However, the indicator is prone to manipulation by re-classifying less profitable partners as non-equity partners. Revenue per lawyer (RPL): Gross revenue divided by number of lawyers. This statistic shows the revenue-generating ability of the firm's lawyers in general, but does not factor in the firm's expenses such as associate compensation and office overhead. Average compensation of partners (ACP): Total amount paid to equity and nonequity partners (i.e., net operating income plus nonequity partner compensation) divided by the total number of equity and nonequity partners. This results in a more inclusive statistic than PPP, but remains prone to manipulation by changing expense policies and re-classifying less profitable partners as associates. Structure and promotion Partnership Law firms are typically organized around partners, who are joint owners and business directors of the legal operation; associates, who are employees of the firm with the prospect of becoming partners; and a variety of staff employees, providing paralegal, clerical, and other support services. An associate may have to wait as long as 11 years before the decision is made as to whether the associate is made a partner. Many law firms have an "up or out policy", integral to the Cravath System, which had been pioneered during the early 20th century by partner Paul Cravath of Cravath, Swaine & Moore, and became widely adopted by, particularly, white-shoe firms; associates who do not make partner are required to resign, and may join another firm, become a solo practitioner, work in-house for a corporate legal department, or change professions. Burnout rates are notably high in the profession. Making partner is very prestigious at large or mid-sized firms, due to the competition that naturally results from higher associate-to-partner ratios. Such firms may take out advertisements in professional publications to announce who has made partner. Traditionally, partners shared directly in the profits of the firm, after paying salaried employees, the landlord, and the usual costs of furniture, office supplies, and books for the law library (or a database subscription). Partners in a limited