The purchase of Covid-19 vaccines by the EU Commission as agent for the Member States has caused substantial political discussion, including a lawsuit against the producer AstraZeneca in Brussels in 2021. The article looks at these purchase contracts as examples for a problematic use of “best efforts“ clauses in commercial contracting, considering some key jurisdictions. The clauses are discussed from a drafting perspective, including their function and their theoretical background in comparative law. It concludes with a primer for the drafting process, looking at some basic contracting schemes for softening or intensifying obligations.
