Subject to the terms of this retainer agreement, in the event any bill from this firm remains unpaid beyond a 30-day period or, if in the judgment of this firm. What should be included in a retainer agreement?This contract reflects an agreement between LAW FIRM, ("Law Firm") and CLIENT NAME ("Client") concerning the provision of legal services to advocate for. Awarded bidder will execute and comply with terms and conditions of sample contract attached to this bid package. Environmental Certification. Green Seal ; Features.