Abstract: This report synthesizes recent evidence on how artificial intelligence is reshaping work, drawing from Microsoft's 2025 New Future of Work Report and the broader research literature. While 2024 marked individual productivity gains from generative AI, 2025 signals a critical shift toward collective productivity—how teams, organizations, and communities can improve together with AI. Adoption continues to accelerate globally, with enterprise ChatGPT messages increasing eightfold year-over-year, yet organizational success depends heavily on employee engagement, trust, and participatory design rather than top-down mandates. Evidence reveals meaningful productivity gains and time savings, particularly in knowledge work, but also emerging challenges including AI-generated "workslop," cognitive deskilling risks, and mixed labor market effects concentrated among early-career workers. Human-AI collaboration is evolving from passive tool use to active partnership, requiring new interaction paradigms, robust common ground, and cognitively engaging workflows. Teams face distinct challenges as AI shifts from supporting individuals to enabling group work, demanding new evaluation frameworks, proactive agent behaviors, and careful attention to social dynamics. This report examines adoption patterns, workforce impacts, collaboration design, cognitive implications, and sector-specific transformations while highlighting that AI's ultimate value depends not on technical capabilities alone but on intentional organizational choices that prioritize human agency, skill development, and equitable outcomes.