O’Connor MacLeod Hanna (OMH) is the largest full-service law firm in the Halton Region.
We offer employment opportunities to talented lawyers, students, legal assistants and law clerks, admin support, and accounting professionals. Our firm members are proud to call OMH their employer, and we are pleased to have an incredible team of talented individuals.
At OMH, we look for intelligent, ethical, and driven individuals. We pride ourselves on being a place where firm members, clients, and the community feel welcome. Our staff is passionate about the law, open to learning, and genuinely care about each other, their work, and their clients. Regardless of the position, the ideal candidate is committed to improving themselves, the firm, and the community.

Top talent is always welcome
We believe in giving our staff the autonomy to do fulfilling work and grow their careers. Our shared vision for our clients, firm, and community bonds us. We offer development opportunities for all staff, diverse and complex work, and the ability to get involved in our firm and the broader community.
Our junior and senior firm members believe in respect, collegiality, and inclusion. At OMH, everyone can excel and contribute to the firm’s success. With firm-wide events and a robust social committee, we focus on making OMH a place where people are excited to come to work.
We have an open-door policy and believe in fostering an environment of interconnected professionals who collaborate to achieve the best possible results. Whether it’s a question, concern, or a quick brainstorm, we make the time for our colleagues to help everyone achieve their best results.
We work hard, but we don’t forget to have some fun along the way. OMH has a very active and creative social committee. Social events at the firm have included everything from fine dining at our Christmas parties to croquet and bocce ball barbecues on the front lawn of our premises. We have escaped from locked rooms, cruised the great lakes, ridden the iron horse through the Credit Valley, walked the tight ropes in Blue Mountain, attended the horse races at Mohawk Raceway and taken in a show at Stage West, among numerous other events.
We also understand that a thriving life outside of the work environment positively contributes to work morale and output; OMH believes in maintaining a work-life balance, and we give our firm members the space and time to keep active and healthy personal lives.
Student Articling Programs
At OMH, we are committed to helping our students develop their legal and professional talents.
We offer our students opportunities for mentorship across practice areas and social events to help them feel connected to the OMH community. As a full-service firm, we offer diverse work opportunities and the ability to find your niche in the legal field. We want to invest in you as a person; to achieve this, we offer a work-life balance that will allow you to perform your best and achieve a thriving personal and professional life.
We see our students as our future partners. As a firm, we form strong relationships with our students and are committed to rehiring those who demonstrate a passion for law, teamwork, and a strong work ethic.
Current Opportunities
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Controller/Office Manager
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Our dynamic fast-paced law firm which is located in Oakville, is looking for a Controller/Office Manager with at least 6-8 years of experience in the professional services sector, ideally with a law firm. The role will oversee the finances, human resources, facilities and general administration of the firm. The candidate must be highly-skilled and incredibly organized, enthusiastic and committed to excellence.Primary Responsibilities - Financial Management:- review and approve monthly bank reconciliations;- prepare and analyze monthly and year-end financial statements and financial notes to same and report same to partners;- prepare year end working paper files and reconciliations for auditors;- prepare comprehensive annual budgets and forecasts throughout the fiscal year;- prepare and oversee partner draws, year end income distribution and bonuses;- prepare for and oversee any external audits – i.e. Law Society, LawPro, CRA etc.- prepare HST Returns for partnership and management company;- approve all Law Society Filings, including quarterly Transaction Levies;- approve all accounts payable;- review and approve quarterly banking reporting and provide information for the annual bank agreement review;- prepare schedules and liaise with accountants to prepare the annual partnership tax return and T5013s;- ensure compliance with GAAP and all Law Society By-Laws and Regulations; andSecondary Responsibilities - Administration/HR Personnel:- oversee all support staff of the Firm, including recruitment, onboarding and annual reviews and supervise the clerk/driver, librarian and receptionists;- liaise with payroll specialist and approve payroll on a bi-weekly basis;- prepare and review income tax information and liaise with Revenue Canada regarding all aspects of remittances;- coordinate annual EHT Returns;- liaise with the landlord re: lease, rent, etc.;- liaise with insurance companies to ensure adequate coverage, report claims, including business insurance, LawPro & excess E&O practice insurance;- administer and recommend annual renewal of the firm benefits plan;- Co-ordinate the filing of Law Society members annual returns.- liaise with the United Way (and other charities) with respect to fundraising, workplace campaign, contributions, deductions, etc;- attend partnership meetings and prepares minutes and any information required for these meetings;- liaise with local papers etc with regards to firm advertising and any other marketing initiatives;Qualifications:- Bachelor’s degree in business/commerce with an emphasis in accounting required.- CPA designation required.- 6-8 years relevant experience, with minimum 5+ years in a managerial role, ideally at a law firm.- Experience with law based accounting applications (GhostPractice or similar accounting system is an asset).Must have proficiency with Microsoft Excel.
We offer a competitive salary and benefit package commensurate with experience.
Please forward your resume to: jobs@omh.ca
We thank all applicants for their interest in this position; however, only those individuals selected for an interview will be contacted.
No telephone inquiries, recruiters or agencies please.
October 17, 2025
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