Contemporary studies have disclosed that small businesses inclusive of cleaning services companies in Nigeria hardly survive 5 years after inception, which is an impediment to economic growth. Small businesses account on average, for about 50% of the Gross Domestic Product of all countries and for 63% of their employment. This study assessed the effect of temporary work on small business sustainability. The study adopted a quantitative approach, using descriptive design and a well structured questionnaire to elicit data from a sample size of 400 in the selected cleaning services companies in Lagos State. Findings revealed that tempoarary work influence small business sustainability. In other words, the human factor as it relates to work environment, work flexibility, job security and training which has largely been ignored enhances productivity, employment stability, work life balance and job satisfaction – a prerequisite for business sustainability. This study therefore recommends that small businesses should provide conducive workplace in which employees can self actualize their goals and align it with the sustainability of the business.