From Bureau of Labor Statistics:

Lawyer:

Most beginning lawyers start in salaried positions. Newly hired attorneys usually start as associates and work with more experienced lawyers or judges. After several years, some lawyers are admitted to partnership in their firm, which means that they are partial owners of the firm, or go into practice for themselves. Some experienced lawyers are nominated or elected to judgeships. (See the section on judges, magistrates, and other judicial workers elsewhere in the Handbook.) Others become full-time law school faculty or administrators; a growing number of these lawyers have advanced degrees in other fields as well.

Some attorneys use their legal training in administrative or managerial positions in various departments of large corporations. A transfer from a corporation’s legal department to another department is often viewed as a way to gain administrative experience and rise in the ranks of management.

Chemists/Materials Scientists:

Advancement among chemists and materials scientists usually takes the form of greater independence in their work or larger budgets. Others choose to move into managerial positions and become natural sciences managers (covered in the Handbook statement on engineering and natural sciences managers). Those who pursue management careers spend more time preparing budgets and schedules and setting research strategy. Chemists or materials scientists who develop new products or processes sometimes form their own companies or join new firms to develop these ideas.

Professors:

For faculty a major goal in the traditional academic career is attaining tenure, which can take approximately 7 years, with faculty moving up the ranks in tenure-track positions as they meet specific criteria. The ranks are instructor, assistant professor, associate professor, and professor. Colleges and universities usually hire new tenure-track faculty as instructors or assistant professors under term contracts. At the end of the period, their record of teaching, research, and overall contribution to the institution is reviewed, and tenure may be granted if the review is favorable. Those denied tenure usually must leave the institution. Tenured professors cannot be fired without just cause and due process. Tenure protects the faculty member’s academic freedom—the ability to advocate controversial or unpopular ideas through teaching and conducting research without fear of being fired. Tenure also gives both faculty and institutions the stability needed for effective research and teaching, and it provides financial security for faculty. Some institutions have adopted post-tenure review policies to encourage ongoing evaluation of tenured faculty.

The number of tenure-track positions is declining as institutions seek flexibility in dealing with financial matters and changing student interests. Institutions are relying more heavily on limited-term contracts and part-time, or adjunct, faculty, thus shrinking the total pool of tenured faculty. Limited-term contracts, typically for 2 to 5 years, may be terminated or extended when they expire and generally do not lead to the granting of tenure. In addition, some institutions have limited the percentage of the faculty that can be tenured.

For tenured postsecondary teachers, further advancement involves a move into an administrative or managerial position, such as departmental chairperson, dean, or president. At 4-year institutions, such advancement requires a doctoral degree. At 2-year colleges, a doctorate is helpful but not usually required for advancement, except for advancement to some top administrative positions, which generally required a doctorate. (Deans and departmental chairpersons are covered in the Handbook statement on education administrators, while college presidents are included in the Handbook statement on top executives.)