Martin O'Malley

Looking further:

'The 12-week timeline for paid family leave mirrors that in Senator Kirsten Gillibrand’s FAMILY Act—which would create a trust fund of employer and employee contributions and make leave available to even part-time, low-wage employees—and is loosely based on successful policies in place in California and New Jersey.'

https://newrepublic.com/article/122801/martin-omalley-just-joined-paid-leave-party

Enacted the Maryland Parental Leave Act
Governor O’Malley signed legislation requiring small businesses to offer six weeks of family leave without the possibility of job loss.

https://martinomalley.com/record/