Of these labour force participants, 16,595,035 were employed, and the employment rate – that is, the number of persons employed expressed as a percentage of the total population aged 15 years and over, was 60.9%.1 In comparison, at the time of the 2006 Census, 15,958,195 were employed and the employment rate was 62.6%. [...] Portrait of Canada's Labour Force BAB55B5B5B5 ging of the workforce B155B65115B1BB1Almost one out of five workers was aged 55 years and over According to the 2011 NHS, workers aged 55 years and over accounted for 18.7% of total employment compared to 15.5% in the 2006 Census. [...] This is the result of the aging of the baby boom generation and the increased participation of older workers in the labour force. [...] Occupation Occupation refers to the kind of work persons were doing during the week of Sunday, May 1 to Saturday, May 7, 2011, as determined by their kind of work and the description of the main activities in their job. [...] Occupation unit groups are formed on the basis of the education, training, or skill level required to enter the job, as well as the kind of work performed, as determined by the tasks, duties and responsibilities of the occupation.