A method of monitoring input devices to discover units of work and type of work includes recording uses of input devices of a computer, analyzing the recorded uses against pre-defined use patterns to determine sets of the recorded uses that correspond to one of a plurality of units of work, and outputting an indicator indicating which of the units of work have occurred. A method of accessing a call center includes performing speech to text transcription on audio recordings from the center, determining an identifier identifying an operator for a call from the text, estimating a phase of the call based on the text, recording ant entry including the identifier, the phase, and a time period of the phase, correlating the entry with another entry including information on an application run during the estimated phase to generate a correlated entry, and determining quality level of operator based on correlated entry.