Spillover effects are externalities of economic activity or processes that affect those who are not directly involved. Odours from a rendering plant are negative spillover effects upon its neighbours; the beauty of a homeowner's flower garden

Flower garden

A flower garden is any garden where flowers are grown for decorative purposes. Because flowers bloom at varying times of the year, and some plants are annual, dying each winter, the design of flower gardens can take into consideration to maintain a sequence of bloom and even of consistent color...

 is a positive spillover effect upon neighbours.

In the same way, the economic benefits of increased trade are the spillover effects anticipated in the formation of multilateral alliances of many of the regional nation states: e.g. SARC

South Asian Association for Regional Cooperation

The South Asian Association for Regional Cooperation is an organisation of South Asian nations, founded in December 1985 by Ziaur Rahman and dedicated to economic, technological, social, and cultural development emphasising collective self-reliance. Its seven founding members are Bangladesh,...

 (South Asian Regional Cooperation), ASEAN

Association of Southeast Asian Nations

The Association of Southeast Asian Nations, commonly abbreviated ASEAN rarely ), is a geo-political and economic organization of ten countries located in Southeast Asia, which was formed on 8 August 1967 by Indonesia, Malaysia, the Philippines, Singapore and Thailand. Since then, membership has...

 (Association of South East Asian Nations)

In reference to psychology, the spillover effect is when one's emotions affect the way they perceive other events. For example "arousal from a soccer match can fuel anger, which can descend into rioting or other violent confrontations" (Exploring Psychology Eighth Edition in Modules, David G. Myers, 2010)
An effect of one person on another is also referred to as crossover effect. (See also: emotional contagion

Emotional contagion

Emotional contagion is the tendency to catch and feel emotions that are similar to and influenced by those of others. One view developed by John Cacioppo of the underlying mechanism is that it represents a tendency to automatically mimic and synchronize facial expressions, vocalizations, postures,...

, partner effects

Partner effects

Partner effects refer to the ways in which a spouse or consensual mate influences the life of their significant other. More specifically, the effect a partner has on another's career and overall occupational status...

)

In the context of work-life balance

Work-life balance

Work–life balance is a broad concept including proper prioritizing between "work" on the one hand and "life" on the other. Related, though broader, terms include "lifestyle balance" and "life balance".-History:The work-leisure dichotomy was invented in the mid 1800s...

, spillover refers to positive or negative effects of an individual's working life on their personal life

Personal

Personal may refer to:* Personal hygiene* Personal identity * Personal web pagePersonal may also refer to:* Personal advertisement, an ad, like a classified ad, generally meant to find romance or friendship...

 or family life

Family Life

Family Life is a magazine published by, and primarily for, the Old Order Amish. The publisher is Pathway Publishers of Aylmer, Ontario, Canada. Unlike some Amish publications, Family Life is printed entirely in English rather than Pennsylvania Dutch or German.The magazine was founded in 1968 and is...

 and vice versa. Examples are work-family enrichment

Work-family enrichment

Work–family enrichment or work–family facilitation refers to a process whereby experience or participation in one role increases the quality or performance in the other role....

 and work-family conflict

Work-family conflict

Work–family conflict is “a form of interrole conflict in which the role pressures from the work and family domains are mutually incompatible in some respect. That is participation in the work role is made more difficult by virtue of participation in the family role”...

.