Strength in Labour ;)

Bonded labour, a system of unfree labour where a person must work to pay off a debt
Child labour, the employment of children under an age determined by law or custom
Contract labour or Employment, a relationship between an employer and an employee
Labour Day, a national holiday in many countries
Labour economics, the functioning and dynamics of the markets for labour
Labor force, the people of a country or other geographic entity actively employed or seeking employment
Labor pool or Workforce, the people working in a company, industry, nation or other group
Labor relations, the study of the relationship between management and workers
Labour movement, the development of a collective organisation of working people
Labour union or trade union, an association of wage-earners meant to maintain or improve conditions of employment
Manual labour, physical work done by people
Unfree labour, work relations in which people are employed against their will
Wage labour, delivery of services by person for payment