A recent report from the School of Social Service Administration at the  University of Chicago found that a record number of U.S. employees are  involuntarily working part-time as a result of a reduction in their hours or  being unable to find a full-time job. This effect of the recession is in  addition to unemployment currently affecting nearly 10 per cent of the  workforce. 
 Susan Lambert, associate professor, commented: 
 "Certainly the current recession is contributing to  underemployment, as evidenced by the proportion of American workers classified  as 'involuntary part-time'." 
 Researchers explain that the U.S. Census Bureau applies the term  "involuntary part-time" to those working less than 35 hours a week because they  could not find a full-time job or because of "slack demand". There were 9.2  million workers in this category in November 2009. Although the largest recorded  figure, it reflects trends seen in earlier recessions. The labor market added  1.5 million involuntary part-time workers between 1981 and 1982 (for a total of  6.8 million workers) and 2.3 million between 1992 and 1993 (for a total of 6.7  million workers). The current study investigated management and employee aspects  of scheduling practices in a national retail apparel firm. Researchers explain  that the majority of waged and salaried employees are hourly and/or part-time  workers who are particularly vulnerable to imposed changes. They receive limited  formal employee benefits, and many are ineligible for public benefits (such as  unemployment insurance, cash assistance, or family and medical leave). Their  work schedules are typically arranged with little prior notice and are often  unpredictable. The researchers call for changes in public policy as well as  company practices to address these issues. 
 Susan Lambert said: 
 "I think it is important to underscore that employment has become  increasingly precarious over the past 30 years, not just during recessionary  periods, due to structural changes in the economy, reductions in labor  protections and evolving employer practices that pass risk from the market onto  workers. The current recession highlights these insecurities, bringing  much-needed attention to the plight of disadvantaged workers who are struggling  to keep their jobs as well as maintain sufficient hours to make ends meet. The  problems faced by hourly, low-level workers are unlikely to go away when the  economy fully recovers." 
 Whatever the economic conditions, employers frequently use  "just-in-time" practices to maintain control over costs and demand. Hourly  workers' schedules are used to accommodate fluctuations often with limited  notice. This disadvantages workers trying to manage their finances, childcare  arrangements and other aspects of family life. 
 Julia Henly, associate professor, said: 
 "Unpredictable work schedules can translate into instability in  family routines and practices, placing additional burdens on already strapped  and busy families, their caregivers and extended family members. We find that  hourly retail employees with more predictable work schedules report lower levels  of stress, less work-to-family conflict and fewer work interferences with  non-work activities such as scheduling doctor's appointments, socializing with  friends and eating meals together as a family." 
 Among other significant findings:  
- Hours vary substantially for both part-time and full-time hourly  workers, with full-time employees working more hours but also experiencing the  greatest fluctuations in hours from week to week.
 - The more hours employees work and the less their hours fluctuate,  the longer they remain at the firm, even after accounting for factors such as  age, race and job status.
 - Job turnover is high, particularly for part-time sales  associates, younger workers, African Americans and recently hired workers.
 - Management practices contribute to job turnover irrespective of  individual worker characteristics. Managers who strategically limit staff  numbers with the goal of providing each sales associate with sufficient hours  have lower turnover and higher retention rates.
 
 The researchers acknowledge the importance of workplace  flexibility in public policy debates as more parents try to reconcile competing  demands of work and family life. Common flexibility options include allowing  workers to work reduced hours, work at home, or vary the start and end times of  the working day. These may make sense for managerial and professional roles but  are less applicable to many low-level hourly workers. This issue will be  addressed in four government- sponsored regional conferences scheduled for the  next twelve months. 
 The authors comment: 
 "Fortunately, policy makers, advocacy groups and researchers are  becoming increasingly interested in developing and promoting flexibility options  for U.S. workers in hourly jobs. As these initiatives proceed, it will be  important that they reflect the range of work conditions found in hourly jobs,  including low-wage jobs in service industries." 
 The third author is Anna Haley-Lock, an assistant professor of  social work at the University of Wisconsin.