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TPP

In trade deals like the new Trans Pacific Partnership, Liberals and Conservatives have included labour-mobility clauses that make it easier for multinational corporations to bring in temporary foreign workers. These arrangements aren't good for anyone except corporate shareholders. 
They make Canadians compete for work at home with people across the world, while making those people easy to exploit at low wages. Without a path to citizenship or the rights of a Canadian, foreign workers face deportation and loss of income if they complain about low wages or unsafe workplaces. A government looking out for Canadian workers would ensure that trade deals protect against these practices, instead of making them easier.

Canada Post 

Canada Post has an injury rate over five times the average. That means a lot of people are getting hurt at work. It affects their lives and negatively impacts the company's ability to deliver the mail.
When postal workers tried to address those issues at the bargaining table, they were ignored. When they went on a rotating strike to protest the lack of action, the company cut off benefits to sick and injured workers on short term disability.  Despite this mean spirited tactic, the Liberals refused to intervene. Daniel took them to task for allowing such a cruel measure to stand.
When the Liberals finally did act, they sided with the company. They legislated an end to the rotating strike, in the same style as Stephen Harper and refused to offer any back pay to the sick and injured workers that were not paid by their insurance plan during the rotating strike.

RCMP

After decades of recurring harassment allegations at the RCMP and a prohibition on unionization, members finally won the right to negotiate a collective agreement. However, the Liberals introduced legislation that would have stopped RCMP members from bringing concerns to the bargaining table about some of the most important issues to them: harassment in the workplace, getting proper equipment for the job and preventing abuse of transfers to punish people for speaking up about problems in the workplace.
Daniel championed the cause of RCMP members across the country and became their voice in the House of Commons. Certain Senators built on Daniel's work in the House to remove the most offensive sections of the bill.