Population-level factors associated with demographic ageing and policies intended to encourage older workers to extend working lives in Australia, Germany, Ireland, Portugal, Sweden, UK and US are documented in this chapter. Data are from international sources (mainly the Organisation for Economic Co-operation and Development and the CIA Factbook, to ensure comparability) derived from government agencies in the seven countries covered in this volume. Presenting population-level data for each country gives readers a starting point for considering how each nation compares to the others analysed in the later country chapters. Data related to demographic ageing, including patterns in longevity, proportion of national populations aged 65+, and country-specific dependency ratios are presented first. These set the stage for understanding the potential gendered implications of demands for older workers to postpone retirement and extend their working lives. Additional comparative data provided in this chapter include nation-specific patterns of women's and men's labour force participation, gender pay and gender pension gaps, typical retirement ages, and a summary of older worker's recent experiences in the labour market. Patterns of unpaid care work, time use, and full-time versus part-time employment are also compared to provide a foundation against which readers can assess the prospects for older workers in general, and the particular disadvantages faced by older women in particular, when governments demand that individuals postpone retirement and work longer.