O ne year ago, the Accreditation Council for Graduate Medical Education (ACGME) imposed new resident duty hour regulations that particularly affect the most junior postgraduate learners. 1 These requirements focus on enhanced supervision and oversight, and limit postgraduate year (PGY-1) residents to 16 hours of continuous duty. We expect data to emerge soon regarding the impact of the second round of duty hour reform on patient care outcomes. However, two articles in this issue of JGIM focus on the urgent need for medical educators to measure the nature and quality of resident learning and patient care activities in the context of reduced resident duty hours.The first article, by Fletcher et al., documents the activities of PGY-1 internal medicine residents during oncall periods. 2 The authors performed a prospective time and motion study on the general medicine wards of a Veterans Affairs Hospital affiliated with the Medical College of Wisconsin. Trained observers recorded activities of PGY-1 residents using customized task analysis software that divided work content into six categories: (1) direct patient care at the bedside; (2) computer work such as writing notes and orders; (3) communication with nurses or other physicians, (4) downtime; (5) transit; and (6) education and learning. Although on-call periods are assumed to be a robust opportunity for PGY-1 residents to assess and admit new patients, only 12 % of PGY-1 residents' time was spent in direct patient care, as compared to 40 % of time at the computer and 30 % in non-patient communication. Although conferences were not included, the authors found an alarmingly small amount of time-20 min-devoted to teaching from supervising residents and/or independent reading about patients.The second article by Gonzalo and colleagues examined compliance with 16 hours shifts during call periods. 3 The authors studied the 16 hours shift in 2010 (before the 2011 mandate) at Beth Israel Deaconess Medical Center. Using an electronic survey, residents were asked about shift length and numbers of new admissions. At least one team member exceeded 16 hours during 40 % of shifts. Not surprisingly, multiple admissions arriving near the end of the shift were associated with non-compliant extended shifts. However, the investigators also found that shifts with more than six total admissions per team had an adjusted odds ratio of 2.9 (95 % CI 1.05-8.3) for non-compliance. As these teams had two PGY-1 residents and a supervising PGY-2 or PGY-3 resident, this number of admissions is relatively modest, yet caused a significant amount of work hour non-compliance.Taken together, these studies paint a sobering picture of the current status of inpatient internal medicine residency education featuring periodic on-call admitting days. Although residents have been relieved of tasks thought to be of low learning value such as blood drawing and patient transport, computerized note writing and order entry currently demand much of their time. Remaining compliant with new duty hour requirement...