1. Study analyzed physician workloads during pregnancy in Ontario (2002-2018). 2. Increased workload in 1st and 2nd trimesters, decline in 3rd. 3. Majority of specialties followed this trend. 4. High return-to-work rates across specialties. 5. Family medicine showed higher return rates based on practice structure. 6. Recommendations for improved parental leave policies. 7. Limitations include exclusion of residents and male physicians.