Ancillary work, also known as support work, refers to the supplementary tasks necessary for the smooth functioning of a primary task or project. This can include administrative duties, research, data collection, and documentation. Synonyms for ancillary work include complementary work, secondary tasks, auxiliary duties, and supportive tasks. Other similar phrases include additional work, collateral tasks, and supportive work. These synonyms all refer to work that is considered secondary but essential to the completion of a primary task or project. It is important to recognize the value of ancillary work and ensure that it is given the attention and resources it requires for success.