The defendant, The Home Insurance Company (Home), appeals from a judgment which, in effect, declared it in breach of its duty to defend the plaintiff, Camp Dresser & McKee, Inc. (CDM), and ordered it to pay certain settle *319 ment and defense costs incurred by or in behalf of CDM. 1 We affirm.
We summarize the facts as found by a Superior Court judge after a trial without jury. CDM is an international consulting engineering firm. At the time in issue, CDM was under contract with the city of Detroit to provide extensive services in connection with Detroit’s water pollution control system and its wastewater treatment plant (plant). In 1981, Joseph Brown, an employee of the city of Detroit, suffered severe injuries when his left hand and arm were drawn into a conveyor machine (conveyor A) at the plant. Employees at the plant commonly engaged in the dangerous practice of throwing ash onto wet conveyor belts in order to create friction and reduce slippage. Brown was injured when he got too close to conveyor A while attempting to throw ash onto the head pulley, which turned and pulled the conveyor belt. At the time, a guard was missing from the head pulley, thereby exposing that portion of the conveyor in which Brown’s hand and arm became entangled. CDM had not issued any warnings concerning the missing guard or the practice of throwing ash.
In 1982, Brown (and members of his family exercising derivative rights) sued CDM in a Michigan State court alleging injuries due to negligence. Imperial Casualty and Indemnity Company (Imperial), CDM’s professional liability insurer under a policy with a $150,000 deductible, assumed defense of the case. Thereafter, CDM notified Home that it claimed coverage under the comprehensive general liability policy which Home had issued it and which had no deductible. Home initially disclaimed coverage on the basis of the allegations in the Brown complaint and the language of the professional liability exclusion in its general liability policy. After investigation, Home again disclaimed coverage. CDM then filed this action seeking a judgment declaring Home’s *320 obligations under its general liability policy. Imperial later intervened as a plaintiff in this suit. During the pendency of this action, $265,000 was contributed by and in behalf of CDM to a settlement of the Brown litigation. Imperial paid defense expenses and so much of the settlement contribution as exceeded the $150,000 deductible.
The relevant broad coverage provision of Home’s liability policy stated:
“[Home] will pay on behalf of [CDM] all sums which [CDM] shall become legally obligated to pay as damages because of bodily injury . . . due to an occurrence, 2 and [Home] shall have the . . . duty to defend any suit against [CDM] seeking damages on account of such bodily injury . . . even if any of the allegations of the suit are groundless, false or fraudulent. . . .” An endorsement to Home’s policy contained the following standard “Engineers, Architects or Surveyors Professional Liability” exclusion: 3 “It is agreed that the insurance does not apply to bodily injury or property damage arising out of the rendering of or failure to render any professional services by or for [CDM], including (1) the preparation or approval of maps, plans, opinions, reports, surveys, designs or specifications and (2) supervisory, inspection or engineering services.”
The issue presented is whether the professional liability exclusion exempted Home from all duty to defend CDM against the Brown suit. The Brown complaint alleged that CDM was responsible for the operation of the plant and its equipment and that Joseph Brown’s injuries were due to CDM’s “negligence and wrongdoing” which consisted, “inter alia,” of its failure to advise and warn of the limitations on the use of conveyor A and its failure properly and adequately to (1) exercise control over the operations of the plant, including conveyor A; (2) make recommendations concerning *321 the safe operation of conveyor A “so as to protect against foreseeable hazards”; (3) “advise and warn of the dangers and hazards attendant upon the use of “[conveyor A]”; and (4) “instruct on the operation, repair and maintenance of’ conveyor A and its parts.
The judge found that, at the time of Brown’s injury, CDM’s relationship to the plant was based upon four contracts which it had with the city of Detroit. He found that the “lead consultant contract . . . was a long term contract in which CDM’s main function was project management to coordinate the projects of all consultants at the plant.” The other contracts required CDM: (1) to prepare operation and maintenance manuals for the plant and to develop and implement a training program; (2) to develop an energy efficient design for various disposal facilities; and (3) to evaluate the plant in terms of efficiency and capacity.
While no reported appellate decision in Massachusetts has addressed or defined the scope of an engineer’s professional liability exclusion to general liability insurance coverage, the decisions dealing with insurance policies provide considerable guidance. As a general rule, the policyholder bears the initial burden of proving coverage within the policy description of covered risks.
Markline Co.
v.
Travelers Ins. Co.,
“It is settled in this jurisdiction, and generally elsewhere, that the question of the initial duty of a liability insurer to defend third-party actions against the insured is decided by matching the third-party complaint with the policy provisions. . . .”
Sterilite Corp.
v.
Continental Cas. Co.,
17
*322
Mass. App. Ct. 316, 318 (1983). If the allegations of that complaint can be reasonably read to “state or adumbrate a claim covered by the policy terms,” the insurer is obligated to defend.
Ibid.
See
Continental Cas. Co.
v.
Gilbane Bldg. Co.,
There being no dispute that the complaint in the underlying action alleged bodily injury due to an “occurrence,” we look to whether Home has established that the professional liability exclusion exempted it from all duty to defend COM in the underlying action. “[T]he obligation of the insurer to defend is based not only on the facts alleged in the complaint [ ] but also on the facts that are known or readily knowable by the insurer.”
Desrosiers
v.
Royal Ins. Co.,
Michigan tort law generally encourages the implementation of reasonable safeguards against risks of injury and imposes on parties exercising control of work sites a duty to take appropriate precautions.
Funk
v.
General Motors Corp.,
The general allegations of the underlying complaint charging inadequate control and failure to warn, coupled with information, chargeable to CDM, of the specific nature of the risk, were sufficient to alert Home that the underlying action encompassed a claim of ordinary negligence arising from CDM’s management or control of the plant. That CDM’s contractual responsibilities may not have encompassed general management or control of the plant is of no significance since Home had an obligation to defend against even groundless claims within the coverage of the general liability policy. Also, it is irrelevant that many of the complaint allegations fell within the exclusion or within Imperial’s professional liability coverage. 4 We return, therefore, to the exclusion to determine whether it excuses Home from defending against a claim of ordinary negligence arising from CDM’s management or control of the plant.
In determining whether an omission or activity falls within the scope of a professional services exclusion, courts generally look to the nature of the conduct under scrutiny rather than to the title or the position of those involved. See
Marx
v.
Hartford Acc. & Indem. Co.,
Interpretation of the language of the exclusion presents a question of law.
Save-Mor Supermarkets, Inc.
v.
Skelly Detective Serv., Inc.,
*324
(1) an insurance contract, like other contracts, is to be construed according to the fair and reasonable meaning of its words,
Cody
v.
Connecticut Gen. Life Ins. Co.,
Neither resort to standard definitions nor parsing of the language of the exclusion is helpful in determining whether the terms “professional services” or “engineering services” include management tasks. The general focus of definitions of “professional services” is on whether an occupation requires specialized knowledge and calls for mental rather than physical skills. 7A Appleman, Insurance Law and Practice § 4504.01 (rev. ed. 1979 & Supp. 1990). Black’s Law Dictionary 1089 (5th ed. 1979). “Engineering” is commonly construed as the “art and science by which the mechanical properties of matter [or energy] are made useful to man in structures and machines.”
Employers’ Liab. Assur. Corp.
v.
Accident & Cas. Ins. Co.,
*325
Two aspects of Home’s exclusionary language are determinative: (1) claims of ordinary negligence or negligent management or control are not expressly precluded; and (2) the word “supervisory” in the clause excluding from coverage “supervisory, inspection or engineering services” is reasonably susceptible of ambiguous interpretation. It can be construed narrowly as describing supervision of purely professional activities or broadly as describing management or control of aspects of a project involving both professional and nonprofessional activities. The underlying claims of negligent management or control in this case properly can be treated as falling outside the former construction and within the latter. The burden of the failure clearly to exclude all of the claims in the underlying action must fall on the insurer.
Worcester Ins. Co.
v.
Fells Acres Day Sch., Inc.,
Home concedes that, if it was bound to defend CDM in the underlying action, it is liable for incurred defense costs. It argues, however, that, whatever its duty to defend may have been, it should not, in this action, be held liable for settlement costs. It is settled that “the obligation to indemnify does not ineluctably follow from the duty to defend.”
Newell-Blais Post #443, Veterans of Foreign Wars of the U.S., Inc.
v.
Shelby Mut. Ins. Co.,
Judgment affirmed.
Notes
Judgment was in the amount of $306,023.44, together with postjudgment interest from October 31, 1988, and court costs. Home does not challenge the computations on which the judgment is based, nor does it dispute the reasonableness or apportionment of the settlement and defense costs.
The policy defines “occurrence” as “exposure of persons ... to conditions which results in bodily injury. . . . “
The “exclusions" section of the Home policy also contained a professional liability exclusion. Home apparently chose to waive application of that exclusion for purposes of this suit and elected to rely solely on the professional liability exclusion in the separate endorsement.
Home could have undertaken the defense of the underlying action with a reservation of rights with respect to the excludable claims. It also could have resolved respective defense responsibilities by agreement with Imperial.
Noteworthy, however, among the decisions involving the same or similar exclusionary clauses are two decisions of the Court of Appeal of Louisiana,
CBM Engrs., Inc.
v.
Transcontinental Ins. Co.,
See
Afcan
v.
Mutual Fire, Marine & Inland Ins. Co.,
In accord with our rule see
Missionaries of the Co. of Mary, Inc.
v.
Aetna Cas. & Sur. Co.,
