In her book, "Off-Ramps and On-Ramps," Sylvia Ann Hewlett examines the non-traditional career paths many working moms pursue. Gearing down in their career when they want to spend more time on family, and gearing back up later. (Read a brief intro to on-ramping here).
Understanding the needs and desires of many working moms to step away from work at some point, many companies have created programs to help support moms (or anyone needing a career break) return to work at a later point.
Often called "on-ramping" programs, they provide resources and support to those who take a leave of absence in order to keep them in the loop professionally and make the transition back to work feasible. Programs vary, but may allow off-ramping employees to stay in touch via e-mail, or through a mentor that still works with the company. The programs also often offer some financial support for participation in continuing education to keep skills sharp. Once you are ready to return to work, on-ramping programs often offer flexible work arrangements to allow you to more easily transition back into the workforce.
When seeking a family friendly work arrangement, the availability of an on-ramping initiative provides solid evidence of a company's commitment to supporting working parents.