Teachers, transport workers, and nurses each walked off the job this week to protest for better pay and conditions.

Meanwhile, climate activist group Blockade Australia took over parts of Sydney, causing further headaches for commuters.

On Thursday, public and Catholic schools teachers went on a 24 hour strike demanding better pay and working conditions.

The NSW Teachers Federation has called for a pay increase of between five and seven per cent to keep pace with the cost of living.

Federation President Angelo Gavrielatos said the strike reflected a failure on part of both the state government and Catholic employers to address the "teaching crisis" in NSW schools.

"Acting on uncompetitive salaries and unsustainable workloads is the only way to stop more teachers leaving and attract the people into the profession we need to fix the shortages," he said.

On Tuesday members of the NSW Nurses and Midwives' Association (NSWNMA) stopped working to stand against the NSW budget, their wages and conditions, and workloads impacting the quality of patient care.

NSWNMA acting general secretary Shaye Candish said there was widespread dissatisfaction among members over the state government's refusal to consider safe staffing ratios.

The group said it also held concerns around transparency when it came to the announced workforce enhancements and regional incentives.

"The government is continuing to ignore the pleas of highly-skilled clinical professionals who remain extremely worried about the delivery of safe patient care now and into the future," she said.

The closed meeting was held at Sydney's Town Hall and broadcast across seven regional hubs.

Meanwhile, on Monday and Tuesday, Blockade Australia climate activists protested in Sydney's CBD, disrupting peak hour traffic.

Up to 60 protesters took to the streets. Police arrested 11 of the protesters, including a woman who chained herself to the steering wheel of her car, blocking Sydney's Harbour Tunnel.

The group sought to shake up "the political and economic systems of Australia which are driving climate destruction".

The protestors chanted, pulled down signs, lugged wheelie bins onto roads and blocked intersections.

Causing further headache to commuters, this week, the Rail Tram and Bus Union said industrial action would continue while negotiations with state government are ongoing.

Sydney Trains chief executive said the company was working on a reduced capacity, its timetable resembling that of a weekend instead of the usual peak-hour weekdays.

He advised people to avoid using the train or allow extra travel time, warning services would be less frequent and trains more crowded.