Final answer:
The truth of the statement depends on specific correlational data, not present in the information provided. Union membership demographics suggest older, male, and government or manufacturing sector workers are more likely to be union members, but job satisfaction and grievance filing are multifaceted issues.
Step-by-step explanation:
The statement that employees who file grievances are older, more active in their unions, and more satisfied with their job, supervisor, and union cannot be universally deemed true or false without specific data supporting these correlations.
However, various factors influence union membership and activity. The percentage of workers belonging to a union is generally higher for men than women; for Black individuals over White or Hispanic people; for those within the 45-64 age range; and among workers in government and manufacturing as opposed to agriculture or service jobs. Despite these demographics, satisfaction with one's job or decision to file a grievance involves many individual factors that aren't solely dictated by age, union activity, or job satisfaction.
Additionally, union influence may decrease as laws protecting workers are enacted, thus making some workers feel a reduced need for union representation. Conversely, union workers might exhibit higher productivity due to higher wages and longer tenure at their jobs, which also includes benefits such as job training and apprenticeship programs provided by unions.