This Practice Note addresses strategic considerations and hidden liabilities regarding labor and employment issues in the context of corporate mergers and acquisitions. This Note discusses strategic considerations from a buyer's perspective relevant to structuring a deal as either a stock or asset purchase. It also discusses hidden liabilities that buyers should consider regarding unionized workforces, controlled group liability, passive investments and private equity funds, successor liability, worker misclassification, wage and hour liability, workplace health and safety, defined benefit pension plans and withdrawal liability, and more. This Note addresses federal law but highlights those areas where state or local laws may impose different or additional requirements.