The TTC said on Saturday that four unions representing its employees have ratified new collective agreements.
Negotiations with the unions, which represent about 10,000 employees, began in early March.
The commission says the last ratification took place Friday night.
Officials say it's the first time since 2008 that the TTC and its unions have negotiated settlements without the need for arbitration.
The commission says the contracts, which include modest wage increases, limits to contracting out and improved job security, will cost about $196 million over four years.