Despite proven benefits for recruiting and the bottom line, few employers are adopting flexible hours as a standard workplace policy, according to a survey by Washington-based non-profit Corporate Voices for Working Families.

In a survey of 150 corporate managers, nearly all said flexible work schedules have a positive impact on business, though very few use the approach as a recruiting tool and even less believe it can reduce costs.

Most respondents said they only offer flexible hours on a case-by-case basis.

"Despite the proven benefits of flexible work strategies, there remains the opportunity to continue to demonstrate the senior management that flexibility should be viewed as more than an accommodation that only helps individual employees," Corporate Voices for Working Families president and founder Donna Klein said in a statement.

"Businesses need to look at flexibility as a diver of financial performance and long-term success," she said.