The Office of Personnel Management is again asking feds what they think of their benefits, according a recently posted memo on the agency’s web site. OPM will be administering the Federal Employee Benefits Survey this summer by email to a random sample of workers, acting OPM Director Elaine Kaplan said in the Aug. 13 heads-up.  The survey was last done two years ago after traditional benefits questions were dropped in 2010 from the Federal Employee Viewpoint Survey. Completing the benefits survey should take about 15 minutes and doing it during work hours is OK, Kaplan indicated. The survey’s chief purpose…