A wide variety of institutions and businesses function twenty-four hours a day or at least on double shift. Even the night shift might be attracted to early morning volunteer work. In the same vein, it is easy to identify businesses employing people mainly in the evening hours. Such workers often sleep late after a long night at work, but are prospective volunteers in the afternoon. Some jobs overlap categories, especially retail sales which employ people on the weekends and in the evenings.
Some employed people work on changing, inconsistent, or temporary schedules.
While this may make it difficult to place such volunteers in regular assignments, they are nevertheless excellent resources for volunteering that focuses on producing a result rather than requiring a time commitment. So you can consider top executives more likely weekday recruits than secretaries who have less choice. This may mean arranging to send someone from your organization to a worksite in the evening to talk with prospective candidates. Target a worksite with a campaign that shows employees you really want their involvement. So do volunteer job descriptions that make use of the skills these employees demonstrate on their paying jobs.