Winter weather window cleaning contracts: 4 US state rules

What to take away

State slip-liability rules change weather clauses

Window cleaners work on ladders, lifts, and roofs, so snow and ice create both fall hazards and slip claims. The property owner's duty to remove snow depends on state law, and that duty is what makes window cleaning contracts for winter weather in US states a state-by-state document: who clears, by when, and what happens if it is not done. The cancellation and notice side of that clause is covered in the window cleaning service agreement.

Illinois follows the natural accumulation rule. A property owner has no duty to remove natural accumulations of snow and ice, but the owner must not create an unnatural accumulation, such as a downspout that dumps water onto a walkway. The state's snow statute is the Snow and Ice Removal Act, 745 ILCS 75/1-75/2, effective September 14, 1979. Your Illinois window cleaning agreement should require the client to clear unnatural ice before you arrive.

Massachusetts also recognizes the natural accumulation rule, with exceptions. A property owner who knows about an unnatural accumulation, like ice from a leaking gutter, must act. A Massachusetts window cleaning contract should define who inspects gutters and who clears ice dams.

New York uses the storm in progress doctrine: a property owner does not have to clear snow while a storm is ongoing, and after the storm the owner has a reasonable time to clear. In New York City the sidewalk duty is set by the Administrative Code, whose owner-occupied residential exemption is NYC Administrative Code § 7-210(b) and covers property that is a one, two or three family residential real property that is owner-occupied and used exclusively for residential purposes — so the clearing duty lands differently on a small owner-occupied house than on a commercial building. A New York window cleaning contract needs a delay clause that starts the clock after the storm ends, not when snow begins.

Colorado and most western states apply comparative negligence rather than the natural accumulation rule, so a window cleaner's own actions can reduce a claim. Colorado's comparative negligence statute is C.R.S. § 13-21-111. California and Arizona use pure comparative negligence — in California the rule comes from Li v. Yellow Cab Co. of California, and Arizona's comparative negligence statute is A.R.S. § 12-2505 — while Nevada (NRS 41.141), Utah (Utah Code § 78B-5-818), and Wyoming (Wyo. Stat. § 1-1-109) use a modified form with a fault threshold that can bar recovery. Your contract should require the client to document site conditions before you start work. That record helps both sides.

These rules mean one generic snow clause fails. A clause written for Illinois puts the clearing duty on the client; the same words in New York give the client until after the storm. Write the clause for the state where the site sits, and re-check it when you cross a state line. Temperature floors and ice dam scope that pair with these clauses are covered in cold-climate window cleaning contract terms.

Table: How state rules change three contract terms

Delay language: force majeure and weather delay

A force majeure clause excuses performance when an unforeseen event makes performance impossible. Snow and ice can qualify, but only if the clause names them. A generic force majeure clause that lists acts of God may not cover a routine snowstorm.

The Cornell Law definition of force majeure explains that the event must be beyond the party's control. Your agreement should list snow, ice, and extreme cold as specific triggers.

A weather delay clause is different from force majeure. It lets you reschedule without penalty when the forecast shows unsafe conditions. Set a temperature floor, such as 25 degrees Fahrenheit, and a wind chill limit. Set a notice cut-off too — for example, 6 p.m. the day before — and say what happens when the client misses it: a trip fee, with the amount written into the clause.

Write the delay terms into the agreement itself: name the weather trigger, the notice channel, the reschedule window, and the fee, so neither side has to argue about intent after a storm. These clauses are not registered or filed with any state agency, so the signed agreement, the client's notices, and your site-condition notes are what you would produce if a claim follows.

Site access, indemnity, and insurance terms

Property managers often require an indemnity clause. An indemnity clause shifts liability for property damage or injury to the window cleaning contractor. The Cornell Law definition of indemnity explains that the clause can cover third-party claims. In snow states, the clause should exclude claims caused by the client's failure to clear ice.

Window cleaning contractors must also show proof of workers' compensation insurance. Workers' compensation is a state matter: the statute and the agency of the state where you work set who must be covered and what proof you show. The Occupational Safety and Health Act's general duty clause, Section 5(a)(1), requires employers to provide a workplace free from recognized hazards, and property managers use that requirement to demand certificates of insurance before allowing roof access.

Example: Illinois natural accumulation clause

The Client shall remove all natural accumulations of snow and ice from walkways, ladder footings, and roof access points before the scheduled service. The Contractor shall not perform window cleaning when snow or ice creates a fall hazard. If the Client fails to clear the area, the Contractor may reschedule without penalty and charge a trip fee of $75.

Numbered steps to update your winter contract

Common questions